I try and give people the choice to refuse/skip most sex scenes. The few scenes that aren't optional are there for advancing the plot. So, no, I am not lying when I say it's optional. I put in extra work and make extra scenes just so people are not forced into doing a certain scene or fetish. The main theme is NTR, yes, but you can play around it.
To your second point - No. In fact, I recently posted a questionnaire on my patreon page and one of the questions was "What fetish is your favorite" The majority (30%+ from 10+ possible choices) was NTR. The questionnaire was also a public post, not a patron-only.
There's only 2 instances of unavoidable NTR in the whole game and the game has a plethora of sexual content, so that's a drop in the sea. Some sex content has unavoidable choices simply because it is needed for advancing the plot, like I said above. It's not a simple manner of it being NTR only or not. All fetishes might have unavoidable scenes. There's also the fact that the game has a free to play version which you can see the two unavoidable NTR scenes, and if it still bothers you then you do not have to support me. About the poll, it's because it's not patron-only. It's a public post. And people, like the guy I was replying to, who apparently hate NTR so much keeps following me around to make these posts, will be able to vote as well.