It works because they're fascists.
One of the main pillars of every fascist movement is "we're the only normal ones". It's how they justify othering, persecuting, and abusing everyone who's not a cishet white fascist Christian, preferably male.
To a fascist, anyone who's not "normal" is one of the OTHERS and thus scary and evil and needs to be suppressed and hidden away, if not violently eradicated.
Fucking hell! Every time either of them says something truly based, some DNC lackey comes and spoils it by saying that! 🤬