Orion browser on iOS supports Firefox and Chrome extensions. It’s relatively new still, but I’ve been using it without any issue with uBO

I don’t dislike the Adam’s Family nor the Munsters, but I have blocked both communities because they each had a ton of submissions on the same day, and they were dominating my feed.

There’s nothing wrong with slowly submitting content. Submitting too much, too quickly makes it hard to distinguish from spam.

Just my opinion. I understand that you are looking to build something, and therefore you disagree on submission frequency.