Zeek

I have yet to see one of those messages. Proud uBlock user.

If you use a script manager (Tampermonkey, Violentmonkey, Greasemonkey, Firemonkey) I can recommend some userscripts:

1. Tabview for Youtube - condenses comments, description, playlists and chat into a neatly organised sidebar,
2. YT Resource Unholder - improves how YT handles resources and improves performance,
3. YT CPU Tamer - more performance improvements,
4. YT AV1 - forces YT to use AV1 for all videos.