This extraordinary saga of takedown notices for performances of Shakespeare show that 27 years after it was passed, the DMCA is still not fit for purpose. The companies like Google that are tasked with implementing it often do so in the most desultory way. There is an underlying assumption that claimed infringements are valid, an injustice compound by an arrogant indifference to the rights of ordinary citizens who find themselves caught up in a complex copyright system that is stacked against them.
All the examples you provide already have alternate hosting methods they publicise aggressively. LTT has Floatplane, which they own, DF offers Patrons higher bitrate alternative to their videos for download, GN pushes people to their website (although that’s different and not really monetized) and a whole bunch of other creators banded together and made Nebula as an alternative to Youtube.
My understanding is that the vast majority of those alternatives from successful, established creators are residual, secondary monetization windows when compared to Youtube advertising and sponsorships driven pretty much entirely by Youtube views.
I do agree that Youtube is a huge aberration. Every other dominant streaming site is built on owned or licensed content, not UGC, and they’re largely supported by subscription revenue first, advertising second. Definitely not by third party sponsorships baked right into the UGC. It is what it is, though, and if it got shut down tomorrow I genuinely don’t know that independently generated content would survive in any form at all. Maybe someone would ramp up capacity to try to replace them, but most likely you’d see social media posts becoming the real replacement.
Much as my feelings for Youtube are mixed, I don’t know if I can think of a realistic alternative that isn’t worse.