None of my youtube creators are producing content on peer-tube.
That’s probably more of a monetization issue than anything related to peertube. If your job is making Youtube videos, then at least some portion of your income is AdSense. Sure, it’s not what it was, but at scale it’s not nothing, and the peertube alternative is… $0.
(Also, for the non-commercial ones or the ones that are funded outside of Youtube, maybe ask if they’ll use Peertube. I’ve had luck with a couple of people I watched being willing to upload to multiple platforms, but you don’t know if you don’t ask.)
Either is fine: the question is what happens when something breaks and if you care about issues and such.
If your docker host depends on the pihole it’s running, there can be some weirditry if it’s not available during boot and whatnot (or if it crashes, etc.).
…I ended up with a docker container of pihole and an actual pi as the secondary so that it’s nice and redundant.