Does that look like a “gentleman” to you? By familiarity of this particular sort who broadcasts his open distain for trans people on his shirt I warrant he is not a chivalrous, courteous, or honorable man.
I think “male” is probably polite enough and better than he deserves.
Kinda reminds me of the time Ken McElroy was murdered in the middle of Skidmore Missouri during an altercation where most of the town was present and “nobody saw anything”.