It's like the Claymates all over again.
This is Broadway, the most openly gay career field on the planet. People will ask, because this community doesn't ascribe to the Hollywood Don't Ask, Don't Tell glass closet rules. I'm guessing the original poster asked because they thought it would be impressive to have an all-gay cast for the first time, not because they're trying to compose a scandalous tabloid article revealing that -shock- there are gay men on Broadway.
If Jim Parsons can't handle a casual discussion like this was, he shouldn't have come to Broadway, and he especially shouldn't have done this play. But since he did, I'm going to
speculate that any discomfort is coming from his fan base, not from him.
Like a firework unexploded
Wanting life but never
knowing how