The funny thing is that people were complaining about "early mover advantage" back then too and claimed that $200 is too much since they've lost the opportunity to buy bitcoin "cheap". Complaining about the same thing now at $20k isn't any different and they'll do it again in the future when price is $200k and $2 million too, instead of buying bitcoin now!
For those who want to find an excuse, there is always something, and it doesn't have to be exclusively the price, but also opinions that have taken root very well over the years and become part of the mainstream. Whether it is that Bitcoin is a Ponzi scheme, a dirty industry that destroys the environment, a tool used by drug dealers and other criminals to the fact that Bitcoin is some kind of anarchist idea created to destroy the existing financial system.
If it's only about the price, I earned my first Bitcoin without investing a single cent by spending a couple of hours a day on faucets and anyone could do that. Some may call it a waste of time, but considering the price then and a few years later, I still think it was time well spent.