Anyone answering this question for you is probably biased in either direction. You should do your own reading and decide for yourself.

Here's a good article from 2018 that gives an argument on the bullish side: https://vijayboyapati.medium.com/the-bullish-case-for-bitcoi..., and here's a more bearish view: https://crypto-anonymous-2021.medium.com/the-bit-short-insid....

It's definitively late if you are expecting the x100 returns, and significantly perilous now since prices have risen a lot recently.

That depends. Where is the ceiling? There has to be a rational upper bound. Right?

Have you taken your time and watched 5 minutes of the linked YouTube video?

HedgeFunds are just starting to get into BTC. The price is still to low for them to allocate even 1% of their capital to it. When the price hits around 500k, then it is starting to get interesting. So, no. It's not.