Be the change we want to see in the world. Stop posting on YT/FB/IG/wherever, and create your own site, attract your own audience.
I'll come watch you/read it/listen to it. I'm sick of FB/YT/IG/wherever.
I have seen that, particularly in history channel circles were the content get demonetized for things like saying Hitler, many of them band together and publish to youtube last or not at all and promote these other channels in their videos. I don't know if any of them will be successful, but staying on youtube simply isn't an option for them either.
I think if/when youtube falters it will be death be a thousand cuts, it won't be a single movement with organization and it won't be to something else as centralized.
If one is not willing, capable, or even interested in trying to solve problems they help create, as an individual or a group, I have very little interest in sympathy for their difficulty.
Refusing your pet idea isn't a refusal to do anything at all.