I blocked the account all those posts listed were from, then unblocked the domain (after which the posts were still there on the home feed), then blocked it again, and now those posts appear to have vanished. I don’t know which of the steps were crucial, but I’m open to experimenting further if it can help.

I added pubeurope.com to my blocked domains, and now my home feed consists of nothing but posts from that domain.

I’ve apparently blocked Threads previously (although I don’t remember it, so it may just be a default), but I don’t recall seeing posts from Threads in my timeline. Certainly not completely filling it like this.

I’m on Pixelfed.social.