That’s actually insane.

I wonder if they’ve just sent out a generic rejection without checking it.

It’s not harmless. They’re maliciously using downvotes and as a consequence lemmy’s algorithm will rank OPs content lower.

This isn’t a case of downvoting individual statements you disagree with, it’s harassment.

The mod took down my post without any comment, reply, or reason.

This is definitely enough reason to post in !yepowertrippinbastards@lemmy.dbzer0.com

It also opens up an interesting debate about what is appropriate. While the mod action is understandable (they don’t want rival communities), it’s a bit of a misuse of mod tools to delete it in my opinion.

Then separately they’re harassing you by following you round downvoting everything you post. That’s the sign of somebody unhinged. They are able to compartmentalise actions that occur inside their community from the wider Lemmy.