It's not disingenuous at all, you just don't want to admit that we're right and that it should be toggleable. How many of those other games are written to include potential gay relationships? Comparatively not a lot, and a good portion of the ones that do probably have it advertised somewhere, whether in the tags or in the genre, and/or toggleable. This one is written to include them and doesn't advertise it at all, while also not having it toggleable. That's the difference here. Advertising and writing. If the writing doesn't allow for the choice because there's not gay content (e.g. Harem Hotel) then it's understandable why there's not a choice. If the bisexual content is advertised either through tags or genre, I still maintain that it should be a toggleable, but I can allow myself to be more lax in judging it for it since we are at least forewarned of it. Now, if a game didn't have gay content but still had a toggle for a gay only content, that would frankly be hilarious. A man surrounded by horny women that he won't fuck because he's gay? That would be great for a laugh, and I'd definitely play it.
The one way that I was mildly disingenuous is that I did focus more on the gay portion of that, and ignored the straight part of it. Yeah, make it toggleable for only gay content too. Realistically it's not like it would actually take that much more writing (specifically referring to this game with that statement), just some tweaks here and there. Though, the code might be a bit more complicated as a result. I'm not certain of that, I haven't done much coding before.