Maybe. Just I case, I wouldn't interact. I would report it to an Admin most likely.
From what I've seen, most Admins will either not let that stand or sadly lead the charge on the psycho shit.
If it's the first, you're good. It'll be gone soon.
If it's the latter, get the hell outta that instance and block it.
Just FYI, I'm not downvoting you.
The bad faith actors should be somewhat easy to pick out. They are in my Community anyway. They often have scads of downvotes they throw out in a short time, not a few over the course of months. Dunno if you are, but if you're using automation to ban, you may just want to tune it to be a little more lenient.