I have doctors/technicians in the family.
And... WTF.
Do the students know the horrific, gruesome, batshit crazy stuff doctors have to witness and deal with? Not just like objects stuck in orifices, but mentally ill and abusive patients, deathly contagious ones, slow motion tragedy, stuff oozing out of the body you wouldn't believe. Criminal patients, criminal bosses and companies, drama with staff, corporate drama, other fucked up or abusive doctors, drug abuse (from the staff), plenty of sex scandals...
...And their thought is: "Patients that want to rub their genitals on the same sex? Eww. I refuse to deal with that, even professionally."
Wut?
Let's play devil's advocate and say the bigotry is somehow justified (when it's not). Still, how does that even work? Like, an anti-vaxx nurse I know makes at least some sense, by comparison.