Earlier quoted context omitted.
Dude's getting eviscerated for his opinions, but you're right, it's the attitude that's the red flag. I'd avoid hiring his political polar opposite too, if they were this petty/angry about it. I wonder if he's going to listen to the advice and present as more milquetoast when using his real name, or double down.
Even discounting finding his opinions objectionable (which, in my opinion, any reasonable person would), I'd pass on someone who posts this kind of content purely because they're a ticking time bomb. I don't want them to piss off a big client or explode because of a work disagreement while they're packing heat. I wouldn't want to hire them knowing that I might have to fear for my life even a little if I need to fire…
But it's a good thing that companies find this out because I'm not a good fit for a sterile work environment.
My original post was not asking why; it was refuting the article that said it was a good thing in its face.