It is open source but you can’t publish modified code (this is to ensure there will be no malicious forks like there was with newpipe)

plus you missed the entire point:

… app for watching online video content - not just youtube, but nebula, peertube, twitch and more.

It’s an app that allows you to watch the same creators across many platforms

37 isn’t middle-aged? I had no idea!

NewPipe

You mean things like the Intel Management Engine? I think they are partially disabled, like in librebooted ThinkPads.

The only good computer is one you have the hardware schematics to (i.e. virtually none of them).

Purism, System76 and, more recently, Framework

Website

F-droid download link

If an app is ok - Kotatsu