Even if someone started investing $100 per week into BTC near the top of the first 2021 peak and through the second 2021 peak, and he continued to invest consistently and persistently that $100 every week for the past 3 years, he would be profitable right now since he would have had invested right around $15,700 and he would have 0.558 BTC (which would be worth around $22,320), and personally, I think that would be a great place to be for a person with that level of a discretionary/disposable budget..
I completely agree with you. Putting $100 into BTC every week for the past 3 years even when the price was high would have made a lot of money. The person would now have around $22,320 worth of BTC from an initial investment of $15,700. This is impressive considering the amount of money they had to spend. It shows that investing for a long time and putting money into BTC regularly is a good idea. Overall this strategy worked well for the person.