I'm pretty sure your heart is in the right place, but your argument is more than a little confusing.
The first paragraph clearly states that you believe sexual attraction is not a choice, and yet your argument is that "it's not a choice" is counter-productive.
If I understand it correctly, you're basically saying to re-frame the "it's a choice" narrative into something that affects straight people who oppose LGBT+ rights because they believe it is a choice that can be made?
e.g. If you're straight and then one day "choose" to be gay, but LGBT+ rights have been abolished, then the government has taken away your right to choose?
If I'm understanding correctly, all other points aside, it may be too confusing to have any good/meaningful impact.
Your last submission was a ~~little~~ lot too "Thanos was right, and we should do that" but without a fictional framing device. If you can re-work it to be a ~~little~~ lot less dehumanizing to 50% of the world's population, please feel free to resubmit.
But I will say that those people you're calling parasites would probably be more "useful" to society if society wasn't largely an orphan crushing machine and they had a chance to utilize their potential.
Again, if you can rework it so it's not "Thanos was right", feel free to resubmit. This post, however, is not an unpopular opinion and I'm going to have to remove it.