How do you know Newpipe does not proxy videos?

Yes the engineers team updated with a long blog post on the development situation and explained that they had to “will also need to rewrite these apps to retire their technical debt”.

Hopefully the new Android version will be released this year but they never mentioned F-Droid

Blog: https://protonmail.com/blog/engineering-team-2021-update/

In public groups now you can even talk on behalf of a public channel, if you create it, and avoid sharing your number and account!