FWIW, with Firefox on Linux with pihole on my network and ublock origin, some component (or the mix) of those things seems to have meant that so far I have yet to experience a single one of the things Google has been doing since the adblock wars began again. I just checked now to see if there was any delay, and there is not.
I haven’t seen a single popup, nor a single warning, no slowdowns, and no ads. I installed freetube in preparation for getting screwed, and although I like it, ad-wise and speed-wise it’s no different than hitting youtube directly.
¯\_(ツ)_/¯
OK. I’m not claiming google isn’t trying. I’m claiming it doesn’t matter, and this is a solvable problem for end users. Most others in this thread are saying just FF and ublock does it, so I probably have overkill going on.
I only know this is happening with Youtube recently because of seeing other people talk about it.