Now I'm even more convinced both you and the dev are full of shit. Nothing about this game tells me the Trans character is the focus. The family are the first characters introduced, and the game is designed in such a way that it incentives you to interact with the family first. If all that wasn't enough to make you think they'll be the focus, the mother is literally the first thing people will see once they click on this game.
However, I do agree that she is the focus. She was the best character by far. She's the only character I actually finished and is likely the main reason why most of us actually like this game. That easily makes us, who like the character, extremely biased in that regard. Plus, the family may be the focus of the GAME, but she is the focus of the DEV. They are two different things here.
As such, the game is misleading to players. Not everyone is attracted to trans, and that's perfectly acceptable. I know you'll say something along the lines of "if you don't like it, don't play it" or "look at the tags", but that's a terrible take. Just because I don't like feet content, doesn't mean I'm going to skip the footjob tag. It doesn't make sense for me to do so since very few games are hyper focused on feet. The same for lesbian, femdom, rape, and of course futa/trans.
The truth of the matter is that all content besides the trans character either sucked, or was average at best. However, because the trans character was so great, it makes those of us who like that content see the game more fondly than it deserved. If the game was a simple game dedicated to the trans character, it would likely be my favorite game, but it isn't.
So, you show everyone the focus is on incest... Than you focus on the trans character? Of course people will annoyed! To say otherwise is complete bullshit. Either you are blind by your bias, or you're just full of shit. Based on everything you've said, and I've seen, it seems like the entire problem was because the dev was misleading everyone. Why would I want someone like that to come back?