Actually, before anyone buys Bitcoin, they already have it in their minds for the speculated price they want to sell their Bitcoin, and if perhaps the speculated price has not been reached based on their expectations, then they will not sell until they have actually gained the desired profit they expected. If an investor happens to buy Bitcoin at a high price, let's say $70k per Bitcoin, and now the price has dipped to $63k+, the investor will have to hold until the Bitcoin price spikes again and goes above their bought price. These are the reasons why we always remind ourselves to invest the amount we can hold for a long time, so that even when the price drops below the purchased price, the person will have to keep holding until the price begins to surge again. 

Based on your question, if I am in such a position, I will have to hold my bitcoin until I can achieve the desired profit I was expecting. 

Speaking of an ATH soon, if you look at the price history of Bitcoin during halving season, the peak price of Bitcoin is usually met a year after the halving has occurred. The bull market is not yet over, so there is a very high chance that we are expecting a new ATH sooner or later next year. 

Bitcoin is predicted to surge above $100k, and if that happens, those who still bought around $67k will be in profit. There's nothing to worry about. 

Of course, things already look good for them, so why not buy more and HODL. By the time some people wake up to buy due to FOMO, it might be a little too late for this bull run.

A new ATH soon is more of a speculation that is also very possible. This Bull market is different from the previous ones in certain aspects but since when haven't seen Bitcoin Halving yet, I think we might go towards $100K and beyond.

I admire Mr. Michael Saylor. I admire his views about Bitcoin which in one of his interviews describes as the ultimate form of property and investment asset, emphasizing its role in capital preservation. He once compared Bitcoin to real estate in New York City, suggesting that just as property in NYC is held long-term for its value, Bitcoin serves as the endgame property for wealth preservation. And I couldn't agree more. From their recent purchase of the dip, it is clear that their continuous acquiring Bitcoin is because of their strong belief in its potential for faster appreciation than traditional assets like stocks or real estate.
Of course yes. It is certain that we will see another ATH but not in this month of March.

As a person who shares the same strong views and belief in bitcoin as them, I would HODL. If I don't that would just be sad.

They are always on schedule, Nah. What I have noticed at the moment is that MicroStrategy's level of confidence in BTC to date is in terms of investment opportunities, the growth of Bitcoin's value in the market in the future is still quite high and on the buying side it doesn't really matter if there are short-term price fluctuations. Indeed, the right time to HODL may vary from person to person, both individual and company, and if MicroStrategy wants to buy again, I think this is the right time while it is still discounted and that is also one of their Long Term Strategy patterns too.

If I were MicroStrategy I will hold until I die because my company can make money everyday, so why I need to worry with my investment? investment is supposed for long term.

It's pretty funny if someone buy MSTR is in order to own Bitcoin, if MIcroStrategy bankrupt and Bitcoin price went to $1 Million, people who own MSTR are broke. For traditional investors who own Bitcoin in centralized entity, they need to choose ETFs over MSTR.

I don't see any point in us worrying ourselves about what MicroStrategy is doing because it is obvious they have pitched their tent with Bitcoin and are not doing badly overall. Despite the ongoing dip, they are in over 60% profits, not many big capitals can post such profits in less than five years of getting involved. What we should be doing is to follow them and buy as they are buying and see where this take us to. I have confidence that they know what they are doing and that anyone who follow them will not regret it. I have learnt to follow successful people in any business I am getting into and that is exactly what we should be doing as those who are privileged to know when they are buying.

There is a common saying in the Bitcoin arena that the best time to buy the coin is when you can afford it. The price of Bitcoin will keep increasing and companies like MicroStrategy are not taking any chances but always investing. I assume the they don't have any intention to sell their holding in this present bull season so buying at $63,700 is not a bad decision since Bitcoin will always beat it's ATH. Just like El Salvador which has not indicated when they intend to sell, MicroStrategy might keep holding until the price hits $1m. If I am in the company's position I will only sell when the company has a pressing need for finance. Besides that, I will ensure the firm keeps holding  Bitcoin just as nations keep gold as reserves.

Absolutely, but even better, own the real bitcoin in self custody.
However, it's definitely true that between the above options, an ETF is better than any individual stock.

Well microstrategy only strategy is to buy Bitcoin at any price and hold but this is not applicable to everyone especially for the weak heart. Microstrategy has a lot of funds to invest on Bitcoin while they already experience the worst possible scenario on their holding on the last bear market so I really doubt that Saylor will still fear on buying Bitcoin even at peak while most of their holdings is already at profit.

For me, It’s important to wait for the market to calm down before you enter so that you can guarantee that there’s no panic anymore to avoid future more dip. It’s better to purchase on a higher price if the market is already in bullish momentum rather than buy on uncertain market with the potential to correct further.