You are like a multi-level marketing salesperson that people have to buy their product quickly, otherwise they will miss the opportunity to earn millions of dollars. If you tell non-bitcoiners like this, they might be suspicious of you and think there is something strange about what you are saying.
If you want to tell people to invest in bitcoin, educate them, tell them what the advantages of bitcoin are, what the risks are, etc. But whether they believe it or not is their business. Just focus on how much Bitcoin you hold, no need to be too exaggerated just because people don't invest in it.
To be fair, this is true for almost all big investments too. Like investing into google stocks, is it better to do that now, or was it better if you did it 20 years ago? Or investing into meta(facebook) now? Or was it better on IPO? Same with almost anything to be fair, things are much better to invest as quickly as you can and as early as you can if you trust that it will have a great future.
Obviously the hardest part right now is the fact that we are seeing bitcoin already peaking, so if you invest right now, you might very well be a little too late, not that you won't make a profit, you can, but even now it wouldn't be too big, if you wait even longer, then it will peak at a price where it would take years for you to make more. Hence, the "act quick" thing works for almost every investment, not just bitcoin, and doesn't make it a multi level marketing.