The company’s team clarified that their terms prohibit third-party apps from disabling ads, as it denies creators their due reward for viewership. Although the announcement did not specify any app by name, it’s plausible to presume that third-party YouTube apps such as NewPipe, YouTube ReVanced, Piped, and others might be implicated.
I use Revanced. Out of curiosity, I tried going to youtube.com on Firefox + Ublock origin on my Samsung a70. Full screen, “double tap to forward 10 seconds”, “double tap to back 10 seconds” and captions work.