Before I caught my last ban, I just started replying to those people with a wall of text that went something like this:

“That thing you’re worrying about trump doing is happening right now. Under Biden. Biden is doing it. Today. Right now. Not hypothetically, but actually, and there are no signs of stopping. Biden is sending weapons right now not trump. The thing you’re worried about trump doing is already happening with Biden in the white house. Right now. He’s doing it. Not trump. Trump won’t make it worse because it’s already on track to be as bad as it can get. Right now. With Biden in command. Today…”

And so on and on and on. I make it tedious to read, but keep it civil enough to not get reported. It was generally met with positive response by other r*dditors