I always just turn DRM off and don't subscribe to these things... Now I know I had a better reason than I thought I did.
sphere_au
The alternative exists, but it costs money. Most big YouTuber accounts (at least the ones I'm subscribed to) post on either Nebula, Patreon or some platform like that. It would cost quite a lot to subscribe to them all, but still less than YouTube premium in my country. So in the worst case scenario where YouTube really blocks all ad free interfaces except paid use, that's my answer. I don't like it as I think a lot of the content is overpriced for what it is, but it's better than having $$$ swallowed up by some mega corporation that is just interested in screwing authors and viewers over as much as possible.
Web environment integrity is a non-starter because it offers avenues for bad actors to enforce "integrity" that forces malware to be loaded as well as legitimate page elements. However, that doesn't mean Google won't keep trying to stop ad blockers, alternative interfaces etc in the future.
The simple fact is that YouTube just isn't good enough to pay the amount of money for that Google wants for it. Accordingly, if other ways to use it besides premium aren't available, I'll stop using it and recover some time in my day.