faceist
A faceist is someone who’s so obsessed with mustaches that they think they’re the only thing that matters, and if you don’t have one, you’re not worth their time.
'I can’t date you, you don’t have a mustache. That’s a deal-breaker.'
He said, 'Your face is good, but you don’t have a mustache, so I’m not dating you.'
She turned him down because he had a mustache. 'No way, I only date people with no mustache.'