Like half of posts have headline that gets repeated in mid summary and then longer summary below. I've posted this protest, but admins didn't like. Where is best place to affect change?
It's probably just people copying the articles to other relevant/duplicate communities. Since each instance can make its own communities, you'll sometimes see the same one made for .world, lemm.ee, etc. I.e. there are now two Star Trek meme communities, Risa and Ten Forward, on different instances.
I haven't made a post on Lemmy yet so I don't know what the form you fill in looks like. Sounds like a design flaw at first glance, to me. I have noticed the same odd thing though, indeed.