There's a lot of gray area in casting, because there are so many factors outside of someone's performance in their audition (if it's even an audition scenario) -- physical type, race, gender, prior experience, name value, working relationships, the rest of the cast, etc. What Harris is saying is discrimination, and it's just one part of a larger matter in the industry that would be worthwhile for Equity to investigate.
It does become a serious matter when sexual preference is taken into consideration, because it could encourage people to "out" themselves prematurely, feel that they need to share their private life on social media, unnecessarily pidgeonhole them, and create other complications in both personal and work life.
Perhaps he just has too much time on his hands. I mean....
"I only let queer men do my work bc they understand at least something about souls."
"Sullivan and Paul* are exceptions bc they are both gay adjacent." (Gay adjacent??)
"Well Joaquin is a personal exception but he’s a shaman not an actor."