X11 can be easily forwarded over ssh. You do need to have at least the application you want to forward installed on RPI, possibly X11 as well. You also need a X11 server on the other side.

On a related note. Why would creators add sponsored segments/other sponsoring/patreon etc if YT pays them enough?

Even youtube doesn’t pay the creators that much. Lois Rossman in a recent video showed some of his video in YT that had over 200k views and generated ~100 USD of income.

Nebula pays creators, and you pay to Nebula.

Even university students studying computer science don’t have this basic knowledge anymore.