This add-on is the best thing since sliced bread. You heard me right!
BUT, Youtube temporarily broke it around Oct 1, 2024 by changing an API to further their war against ad blockers.
Seriously, the ONLY reason this add-on is not more popular is people don't know about it. I have almost complete control of what YT decides to throw in my face - wonderful!

It makes YT usable again.
Many heartfelt thanks to the author!