There's a project which is currently being completed for that scenario, the Mose: https://en.wikipedia.org/wiki/MOSE

Not if you "fork" it locally by doing git clone --mirror and doing git push newOrigin --mirror 😉

It is directly supported and maintained from Google, which then bases Chrome on that project adding some proprietary code. So I think yes, it is doomed

NewPipe with SponsorBlock https://github.com/polymorphicshade/NewPipe

Try Blokada 5. It sets up a local vpn inside your phone and blocks all the ads and trackers. The application is free and open source. Don't download it from the play store as it downloads version 6, which requires a subscription and does cloud stuff (version 5 instead works locally)

https://github.com/blokadaorg/five-android

Enjoy

Newpipe doesn't use youtube official API. It does webpage parsing afaik