You're making an odd request, but I'll bite because it seems sincere. I'm younger! I didn't live through the period, and I'm not a statistician, but I have to ask if this kind of representation is really a gimmick?
For some, it's very meaningful. That character is bisexual, not gay, and it's pretty authentic representation. The reason why it's not so focused on is because people like this, especially at that time, often don't care much for labels. That scene you mention is with a closeted man. This is not unheard of. You may not have had this experience personally, but does that mean it didn't happen? The campy part? Okay. The show wasn't perfect. It did get canceled, after all. But it worries me that you singled this particular thing out because this is obviously a political topic, and you missed the fact that the scene did demonstrate some things about the character, like his recklessness, impulsiveness and opportunism.
He complicated something that could've been simpler, and he did this because he had a hard time separating his personal thoughts and feelings from his work. This is a theme that plays out a lot in his interactions, and I wonder if your understandable discomfort and lack of familiarity with the other aspects of the scene colored your perception here.