It's mostly the odd distinction of "real" or "normal" men. Implying that gender-nonconforming/more feminine men are somehow faking being men or are less of a man because of their bodies. You're also catching trans men when you're saying this - a lot of trans men have 'giant tits' and/or a 'pronounced ass' and they're still men. Some may even choose not to get top surgery, and that won't change. Also cis men with gynecomastia, though they're obviously a completely different case.
There is also something I think is important to keep in mind here: this is a porn game. A porn game where exaggerated bodies and body parts, playing with gender and gender presentation, and femininity in general is a core part of the fetishes here. And thats also why it has a large appeal to a LGBT audience - the lines between genders are blurred, and you get to play in that in-between space. It's a space where you can have silicone tits and an ass the size of your head, but still be seen as a guy - or have that questioned in a fun sexy way.
Basically, a man can be a lot of things. A man can be even MORE things in a openly fetishy queer space. You don't have to get it- you just gotta respect it, yknow?
You know, that last part really hit me. And you know what, fair enough. If there was anyplace to experiment with such concepts it would be a fun porn game, and having even your concepts of gender question can be quite fun in a cis POV. Of course IRL I disagree with a good bit of your assertations as labels should have semi-static meanings if they're to mean something. But the "a man can be a lot of things" is spot on, and ultimately I agree. And I mean 'real men' as in cis men/vast majority of men do not have female sexual characteristics and therefor how others perceive you is tied to that, if respect means I accept that people misconstrue what femininity and masculinity is. But that's another topic entirely, one I'm absolutely wouldn't mind to talk about.
Also, silicone tits? This game has implants or was that an example off the top of your head or based on another game you've played like this? Like it when creators give extra detail to artificial augmentation.
Dude... You are overanalyzing the game too hard.
You have the option of having big tits because people kept insisting on them being added, so they got added, same for the big ass.
In the beginning, both of those didn't exist and they weren't planned (as far as i know). And also they are optional, if you keep selecting them every time you create your character, that's on you. I select them as well, because i like it that way.
When you overanalyze stuff, it stops being fun.
