You are misunderstanding what they are saying on purpose Johnny. They aren't going to turn the dogs loose on the mailman, they aren't gonna slap up the lady dropping off their ubereats.
I don't know if it's because you dislike Nick so much that's it's just got you blinded or what. If someone shows up to your house with intent to fuck with you, if you don't escalate from "get the fuck out of here" to at least being menacing to them, you are basically opening yourself to it happening again. You will notice that broad was the last one showing up to fuck around at nick's place.
Take the shitshow in minnesota with the two gay race commies that got lit up. ICE/dhs caused the protests to escalate by not cracking down on the first faggot that crossed the line with screaming in their faces, throwing shit at them. You allow yourself to get disrespected like that, you invite more disrespect.
Now, you aren't wrong, on paper. You shouldn't open your door to these people, but I can understand nick probably wanted to put hands on that bitch. They doxed him and had been fuckign with him for a few days at that point, and of all the shit he's done and said, he was absolutely right in that moment to do what he did.