No worry about quality when you only get one topic to enjoy for the day.
It really doesn’t matter how it gets like this, the end result is the user seeing the same thing over and over until that particular topic has run it’s course for the day. It used to happen sometimes on reddit as well but not nearly to the same degree.
Yeah, this is simply how federating works, but the user experience of seeing the same thread across multiple subs, across multiple instances, does not make for a great user experience.
The other troublesome thing is that I feel like I’m spending an increasing amount of time every visit blocking little unwanted one-off communities. It was also a challenge on Reddit too, but here you’ve got the additional complication of each instance spinning up its own multiverse of madness.