Yea I realised that after I posted. I wasn’t really thinking about implementation details, and intentionally so, I was just trying to think through it from a UX perspective.
But yea, you’re absolutely right. With an API and federation, there is no such thing as “no upvotes from a certain kind of feed”. It was kinda dumb of me to suggest. Still, I’m personally happy to think out loud.
Limiting votes (and other interactions as mentioned in these threads) by whether a user has subscribed is more viable, but then again federation probably disrupts this again (I don’t know enough to be sure) and likely breaks some promises or conventions.