This isn't technically a Sbubby, at least by subreddit standards, since it doesn't actually alter the YouTube logo. However, given that the post volume here is so low and there isn't really a Lemmy equivalent to r/CleanExpansions I can redirect to, I'm gonna leave it up.
I had found this but I think I'd rather stick with Freetube as I don't want to deal with the cat and mouse of YT and UBlock constantly breaking each other's attempts.
A friend of mine has a working beta of a distributed, scalable, federated youtube replacement that uses a simple flat fee for uploaders, an opt-in storage pool where you can earn credits, and is free to watch with no ads. She's a brilliant programmer. Check out her github, her name is Dee. Dee Snuts.