If your uBlock Origin developer mode extension has been disabled permanently, this will get it back - https://www.reddit.com/r/youtube/comments/1lx9uqu/ublock_origin_has_been_permanently_disabled_for/

I went back to Firefox after Google published all the changes regarding ad blocking addons in Chrome

I'm hanging grimly on to Chrome currently, but it looks like even the above method will be phased out eventually

I've been on Firefox for decades now. Welcome to the cool club.

Brave is the answer to every ad blocker problem

I have so many different things to log into I use Brave, Epic, Vivaldi, Chrome, Edge and Opera

Brave is the only browser you need, heck even 365 SSO works. Plus, your Data is not sent to big tech. Privacy matters.