I mean yea? It's election day for an election that I think both sides consider pretty important. Granted, that's a bit of hyperbole, but this is a far cry from a call to violence. Harris could say the exact same thing, in fact she's likely has said something similar.
Saying this is a threat isn't just an overreaction, it's downright embarrassing. This is the kind of crap the right shares to try and paint Dems as weak, thin-skinned, idiots.
Trump says so much awful shit that warrants this reaction, but not EVERYTHING does FFS.