Fully updated filters on Ublock work. Make sure to purge caches and then click update now on the filter lists page. It's also recommended to clear any user specific rules you have for YouTube.

uBlock Origin still works fine. You just need to make sure you're following these instructions

I used ublock to block the popup by using the pick function, but I have not run into this 3 flags your out popup yet, so depends on how they disable the video I guess. I'll try to report back.

https://github.com/TheRealJoelmatic/RemoveAdblockThing

AdGuard works on safari