The changes you are outlining aren't going to happen from protesting. What we need is a general strike, but there is no appetite to do that in the numbers necessary to actually make any change.
Apparently not, because people have been trying to get young people to vote for decades, and nobody has managed it.
But also, gen z has been trending right. So I don't know if this would actually work.
Trump got young men to vote in droves.
I don't think this follows at all. There are tons of variables at play in an election that make this connection way, way too noisy.
Left-leaning people need to do the hard work of convincing people to their side, and that work needs to start now.