

I don’t think you can expect any VPN to work without sign-in for very long. Google’s playing whack-a-mole with VPNs.
I’ve never actually tried signing in with yt-dlp. How easy is it to make a throwaway google account nowadays? Do they require phone verification or something similarly onerous?
Removing copyright entirely is a bridge too far.
Just roll it back to a reasonable time limit (I dunno, 7 years?), and categorically reject all further lobbying attempts from Disney and the like.