I realize that I misunderstood what you were asking for after I wrote this, so I apologize.

Probably the most potent use of homosexuality I've encountered in media is in the book The Forever War. It's almost a spoiler to even mention it, so I'll say that anyone who wants to read this good and relatively short book, stop here.

The central theme of the story is the protagonist becoming more isolated the longer he is a soldier. Not just from the world and people around him, but from reality as a whole. This is manifested literally as time-dilation's effects forcing him ever further into the future after every relatively short tour. He is missing time compared to Earth, losing a number of years (despite it being only months for him) and coming back to a post-economic collapse country that is unrecognizable and alien to him.

Deciding that the society they re-entered is not theirs, he and his close friend from his first tour re-enlist for another tour and despite assurances to the contrary are separated within seconds of signing their names and sent to opposite ends of the war theater.

After a few more stops and long-distance highspeed travels, he emerges after multiple generations of a centralized human government's heavy-handed implementation of eugenics. To ensure no unauthorized breeding at any scale, everyone alive at this point have been heavily and relentlessly indoctrinated into homosexuality. He is now the only straight man in a deployment of men and women who see him as an incarnation of a dark and evil past due to their education and state encouraged belief structure. For various political reasons related to PR and war veteran placation over time, he has been promoted in transit to a base commander just because of how long (in real time) he has served.

Because they knew this would be a problem for him, the military assigned him a lieutenant who is much younger, but had his nuts shot off in a battle. So they can be eunuchs together, or something. Their reasoning is extremely wack and it just further serves to show how shockingly unempathetic and incapable of not being dicks to their enlistees the military brass are.

So now this relatively young man, who has lost all tether to home, reality, and even the ability to make new friends or relationships, is put in charge of a population who have been taught to disdain the era he was born in and he for being straight as the reason why.

The author manages this psychological isolation and oppression carefully and effectively, while having many other interesting ideas that play out fairly rapidly due to the framing of jumping ever forward in time.

I found the book excellent and do recommend it.

Probably the most potent use of homosexuality I've encountered in media is in the book The Forever War. It's almost a spoiler to even mention it, so I'll say that anyone who wants to read this good and relatively short book, stop here.

The central theme of the story is the protagonist becoming more isolated the longer he is a soldier. Not just from the world and people around him, but from reality as a whole. This is manifested literally as time-dilation's effects forcing him ever further into the future after every relatively short tour. He is missing time compared to Earth, losing a number of years (despite it being only months for him) and coming back to a post-economic collapse country that is unrecognizable and alien to him.

Deciding that the society they re-entered is not theirs, he and his close friend from his first tour re-enlist for another tour and despite assurances to the contrary are separated within seconds of signing their names and sent to opposite ends of the war theater.

After a few more stops and long-distance highspeed travels, he emerges after multiple generations of a centralized human government's heavy-handed implementation of eugenics. To ensure no unauthorized breeding at any scale, everyone alive at this point have been heavily and relentlessly indoctrinated into homosexuality. He is now the only straight man in a deployment of men and women who see him as an incarnation of a dark and evil past due to their education and state encouraged belief structure. For various political reasons related to PR and war veteran placation over time, he has been promoted in transit to a base commander just because of how long (in real time) he has served.

Because they knew this would be a problem for him, the military assigned him a lieutenant who is much younger, but had his nuts shot off in a battle. So they can be eunuchs together, or something. Their reasoning is extremely wack and it just further serves to show how shockingly unempathetic and incapable of not being dicks to their enlistees the military brass are.

So now this relatively young man, who has lost all tether to home, reality, and even the ability to make new friends or relationships, is put in charge of a population who have been taught to disdain the era he was born in and he for being straight as the reason why.

The author manages this psychological isolation and oppression carefully and effectively, while having many other interesting ideas that play out fairly rapidly due to the framing of jumping ever forward in time.

I found the book excellent and do recommend it.