Bitcoin is going to remain as a kind of investment that the earlier you get in, the better, yet an ongoing incentive should exist to get into bitcoin sooner rather than later, even if there might be perceptions of a short-term price bubble.
The earlier you join Bitcoin market with your investment and Bitcoin accumulation, a better chance you have for your Bitcoin portfolio. It comes from two main contributors: The most important contributor is available time of Bitcoin accumulation, for example, if I joined 4 years earlier than you, I would surely have 4 more years of bitcoin accumulation than you. The second contributor is better average entry price than you. I emphasize that it is average entry price that can be achieved with a good investment strategy, Dollar Cost Averaging.
Some people possibly misunderstand this point in a following way. Like if I entered Bitcoin market in 2021 with price around $60k, and another investor participated in 3 or 4 years later with same entry price around $60k, there is no difference. It's wrong thinking because it does not count for accumulative time of investment and accumulation. I have 4 more years so my average entry price would not be $60k but surely lower than that.
A last contributor is experience. By joining this market earlier, I experienced it more in years and market cycles, so I have better understanding about this market, its market cycle, news and manipulations, so that I have been become less likely affetected by manipulations and fud.
I cannot disagree with anything that you are saying since we ONLY have the benefits of hindsight after the fact, and so we cannot really know the direction of the BTC price market at the time that we get into bitcoin, even the guys who started investing in 2021, they might have tried to frontload their bitcoin investment with thoughts that the 2021 bitcoin price was going to perform similar to the 2017 bitcoin market, yet the 2021 market ended up being quite suppressed as compared with the 2017 market, yet even accounting for all of that and ongoing studying of the bitcoin market, it still can be difficult to know if the BTC price is at a fair market value or if the BTC price is being overly suppressed given perceptions of its fundamentals and the various demands upon it - including potential questions about whether people and entities are buying real bitcoin, or are some of them buying exposure to the bitcoin price, yet the third party who is custodying their bitcoin might not have even as close to as many bitcoin as they are claiming to have.
Surely bitcoin's price ends up being reflected by a variety of factors, including that there are large portions of the potential supply that does not move for many years, so sometimes there can be questions regarding the extent to which the private keys are still accessible.
By the way, I personally tend to recommend that anyone getting into bitcoin at a price that ends up being higher in the beginning of the investment, I tend to recommend continuing to invest as the BTC price is going down (in a DCAing kind of a way) rather than to sit on their hands, and so anyone getting into bitcoin in 2021 would have had various periods in which the price would have had gone down after they had gotten in, yet of course, there were two price peaks in 2021, so surely there could have had been slightly differing price dynamics for someone getting into bitcoin towards the beginning of 2021 as compared with the person getting into bitcoin towards the end of 2021.
Even anyone who is new to bitcoin should consider looking at the bitcoin price chart, especially if he might be considering lump sum buying and/or front loading his investment, and sure I also make an assumption that most folks should not be preoccupying themselves too much with the bitcoin rice since many folks do not have large and/or meaningful amounts of money that they can frontload/lump sum into bitcoin and the best that they can do is to be aggressive in their weekly DCA amounts while simultaneously making sure that they have enough money that they are holding back and/or putting into their emergency funds.
Another thing is that it tends to take a long time to build up a bitcoin investment, even for a person (or entity) that might have a lot of capital. There may be attempts at lump sum and/or frontloading of their investment from the beginning, yet as you seem to be suggesting, since bitcoin is such a new asset class, neither entities nor individuals are going to necessarily feel comfortable going "all in" bitcoin from the beginning time of their investment into bitcoin, so even if they might consider that they are being somewhat aggressive, they still might hold back on their level of aggressiveness and inject value over time, whether that is regularly on a weekly basis (which tends to be good for individuals who might not have a lot of assets but have an income flow), or maybe some individuals or entities might engage in various period of lump sum investing into bitcoin and attempting to buy on dips, so even if we might have some similar justifications between individuals and entities regarding why to get into bitcoin and even how to get into bitcoin, yet their available resources will surely affect their options in regards to how to get into bitcoin...
As we many of us have rightly identified that even if MSTR/Saylor have largely been playing with larger amounts of value, they have largely been engaging in a variation of DCA buying of bitcoin for the past nearly 5 years... and by the way, many of us would have had considered that MSTR had greatly frontloaded their investment into bitcoin right from the start, since they invested something like 75% of their then available cash, so then if they had merely taken 10% to 25% of their profits from their business and invested into bitcoin, that would have had been a quite aggressive approach to bitcoin investment, yet instead MSTR chose to increase their aggressiveness in a leveraging kind of a way with both the use of various traditional kinds of financial instruments, yet at the same time, they figure out ways to structure and/or create new kinds of financial instruments to buy bitcoin with other people's money and/or to get other people to be part of their BTC building team with various levels of shared ownership in such BTC, even though largely MSTR retained ownership of the BTC rather then allowing BTC claim s to be individually own-able.