"I again get the YouTube "Ad blockers violate YouTube's Terms of Service" message.
It needs an update of sorts."

I cleared history, cache, cookies of firefox browser. I started Youtube. I refused to agree to their new modified EULA. I deleted the cache of uBlock Origin + update.

And everything works again.

Good plugin needs update for youtube as of 12/6/23

Way better than "ad-block" or whatever that extension is. Charging for a premium version tipped me over the edge, I made the swap to ublock and holy is it good. Not only is it a adblocker, you can also add your own filters in. For example I blocked youtube shorts on desktop with it, and I also put in a community script that removes the artificial slowdown youtube gives you when using firefox

The best adblocker is town. Thanks for keeping the internet alive Raymond Hill.

You definitely have a front row in heaven for you!!