bot spam
I will say the same thing I said when I was trashed for running the alien.top bots: it's not spam if the content is relevant to the community and if it's posted at an acceptable rate.
The communities I am seeing get at most one post per day from these bots, and all the links seem to be related. It is far from being called a "spammer", and by adding content to the niche communities they provide a lot more value to the Fediverse than the terminally online who do nothing but complain about the others and/or only post about Trump and politics.