I agree with you, it is important for us to know about Bitcoin well in order to invest, Bitcoin has a history that you can see because Bitcoin has been able to benefit many investors at present, the future of Bitcoin is bright, but to invest in Bitcoin you have to always be aware of the market, time does not stand still for people, time runs according to its specific rules, so you have to come forward now to invest in Bitcoin because Bitcoin has the possibility of increasing its value further in the future, so you can never lag behind in investment because it will become a reason for you to regret later because it was in your hands to invest in Bitcoin but you did not do it, so in this case you should be careful now and be brave enough to invest in Bitcoin.
Your point is fair enough, regardless of when one invested, it's the idea of long-term that matters, afterall there're still early investors who sold the coin at lose they had the opportunity to buy and hold within 10 to 15years and make better profits but they were ignorant of the potential of bitcoin. Therefore if an investor started now in doing the DCA and holding for more than a decade then they're on the right track and better than the early investors who bought Bitcoin at a rate below the 100k or lesser but sold at lose cause of their ignorance. Also, the way people who didn't invest in bitcoin before it got to 100k regretted that's how people who are not investing now would regret when it goes to 7 figures or more.