I dumped Twitter in the first wave after Elon took over and found a new home on Mastodon. Deleted my Reddit accounts during the API crisis (I still visit but no longer contribute) and spend some time on Lemmy (haven’t yet found the community to be as engaging). Sadly there isn’t a viable alternative for YouTube yet.
Yeah the scale of infrastructure needed for video hosting at a scale needed for creators to move over is nutso. The creators won’t move without the audience, the audience won’t move without the creators. Only way it could work is if another “megacorp” decided to take on YouTube and incentivised creators to move.
Pretty much only Apple and Microsoft have the funds to pull that off.