Nectar attracts bees. Thats the point here. People want to get rich and make money by putting in least efforts. That is why they get FOMOed and start buying things that are high.
I am not trying to dissuade anyone willing to buy bitcoin, but they see the profits that they could make if they bought bitcoin a few years back.
Why are they so optimistic about the crypto market
I cant say from their perspective, but hype is defenitely a part of it. Maybe some of them actually understand how bitcoin works and they believe this to be having an important utility in future.
and how do they analyze and profit from it?
I assume you are asking as a newbie. So as advice to newbies, stop listening to youtube videos about crypto. Learn how it works and see its use-fullness, then go for analyzing charts. If you have a background of stocks you will not find it difficult at all.
About making profits, spot trading is what I suggest to all newbies but point of entry should be low. That you have to decide on your own and defenitely is not 40k USD - that would be a loss at this time. Only go for margin trading if you are well-versed in it, otherwise not.
Thank you for your advice and guidance, it is very helpful to me. I am also learning to understand the crypto market and price trend analysis charts, analyzing and judging investment timing. And I hope that I can invest and earn profits based on suggestions and learning.