I don’t think it’s politics at all.
See politics, definition 3a
It’s not a governmental issue except to the extent hearings will be held, legislation considered, and YT wants to head that off.
I would think legislation attempts to control content on youtube would be a violation of the 1st amendment.
Depends on the type of regulation. Network TV content is still regulated. There is an argument that the internet should be regulated in a similar way for the same reason. And a case could be made that YT is a party to certain illegal and dangerous content on its site. Probably not a great case, but enough to exert enormous pressure to change how it operates.