Nothing to do with sexuality in this case. Although I think it was Sunfish who commented that gays 'tended' to be worse managers because they 'tended' to surround themselves with yes-men/women and I actually think (whether it was Sunfish or not) that whoever said it did have a valid point - and not just at Qantas. But again, young Elaine has many, many failings, being gay (as well as short and ugly and a few other things come to think of it - those teeth!! can't he afford a good dentist?) are not ones that actually bother me. His incompetence however, does.
My comment about being Irish was based on this:
https://en.wikipedia.org/wiki/Irish_jokes