Of course they do this right after trying to kill adblock.

I know it’s maybe not a great replacement for everyone, but this crap is why I stopped using YouTube and just use Peertube now.

Another nice Desktop client (FOSS), which works very well, no ads and not only for YT

MotionBox accesses and aggregates videos via the VBML language.

It supports DuckDuckGo, BitTorrent, TMDB, Youtube, Dailymotion, Vimeo, Twitch, TikTok, Facebook, Odysee, PeerTube, Last.fm and SoundCloud.

All of this inside multiple tabs and without ever showing an ad.

https://omega.gg/MotionBox/

YT without ads also in the Vivaldi Feed Reader