The thing is that the dev is right, and that he was never going to be able to finish the game with the way that things were going. The project was too unwieldy and demanding and it's absolutely the right move, at this point, to be cutting content if he ever wanted to get something finished out.
The problem, though, is that this was entirely his own fault with how bad the workflow has been and the multiple times he's restarted the whole project over the years. Having gay content, in and of itself, was never the issue, and postponing that content isn't going to solve his problems; even now that he's sidelining the gays, he's still going back to the drawing board and rebuilding everything, so that's however many more months, or even years, just to get back to where the current story is at! All the while the Patreon mill keeps on churning, I guess?
And that's the other thing; this isn't actually rare. Games get stalled and abandoned all the time, and having a completed VN is frankly the overwhelming exception to the norm, at this point. I cannot count the amount of devs who have crashed out for one inevitable reason or another, and most of the time I sympathize because making this sort of project is hard as hell, way the hell harder than people probably think. At the same time though...you've still charged money for a project that's stalled for years, and you're still charging money as it restarts again so that it can stall at the same spot so you can charge money for the stalling...like, c'mon, at this point I would respect it more if he was just like "Sorry, yeah, it's too much, I'm abandoning it." But nah, let's ask AI how to make your game. Surely that will get things rolling!