I don’t think that is what they meant.
We all know (at least I woud hope that we would all know) that you don’t need to have had actual sexual contact with someone of a particular gender to know whether you have a potential attraction to a particular gender.
I think they were talking about those people who are heterosexual, by their own admission, and pretend to be queer for a short space of time for a specific reason. Personally, I’ve seen people do it to try to get into a queer bar and I’ve seen people do it ‘because it’ll totes to way funny if we pretend to be togeva lolzzzzz’. (At least that’s how I read it).