Ethereum crash theories: they're out there, too.

I am not a dev. My interest is investing because nobody can pay bills with hopes and dreams and what-ifs. That said: does POS crash Ethereum's value? Many youtuber analysts are claiming a rip followed by a massive sell-off. Or does the POS lead to a limited supply which causes a rip upward?

I know there are more factors at play, such as utility and future development/applications. However, I am interested in what others believe.