The question I’d ask, is whether it’s this guy’s job to challenge them this way. Let alone whether it’s wise, or whether it’s a good thing.
He’s probably going to get kicked out after the brouhaha gets big enough. And yes, there could be a can of legal worms here if a case involving LGBTQWERTYUIOP and this fellow comes up.
Being a cop doesn’t mean he gives up his rights to speak his peace off duty.
The proper response to the PCdiots is to laugh in their faces and mock them.
Not to try to get along with them or even tolerate them (personally, I’d fire someone for being politically correct).