What you are asking for is freedom beyond what the contores of the linear writing can play off.
I think you've misunderstood my point. I'm not really concerned about writing, I think in that regard the game actually succeeds about as well as could reasonably be expected. In fact, the way they've done it, with your character never being referred to using gendered pronouns, is far more efficient in terms of voice acting. I'm not talking about games accurately representing the quote/unquote trans experience, and I don't really trust cis creators to be able to do that anyway.
What I'm talking about is literally bodies. Because a huge selling point of cyberpunk was this enormous level of control and customization over your character. This was actually emphasized a lot in the game's pre-release marketing, including the fact that you could play a gender variant character. But again, because the only real control you have over your character's body is their sexual characteristics, that promise is actually fairly shallow. It also kind of suggests, and I really hope this is unintentional, that the writers saw sexual characteristics as the most important things that define your character, which is really kind of the opposite of what trans inclusion is about.
I always find myself thinking back to Saints Row 2. That game is over 10 years old, and yet it gave you an incredible amount of control over the character you wanted to play. You could play a character who was skinny, or fat. You could play a character who was androgynous, not just one who was hyper masc or hyper femme. How hard would it really have been, with the budget and hype surrounding cyberpunk 2077, to give players that level of control, and it's not even just something that benefits trans people, it benefits everyone who wants to personalize their own character.
I think you are falling into the idea that sexuality makes the person and that simply isn't the case.
In a fictional world, I agree that it doesn't have to be the case. The fantasy that maybe you can be queer or trans and just be accepted and treated normally has a certain appeal, and I think there's a need for media like that. But it's not authentic to the world we live in, and if you're just going to keep writing a bunch of straight-acting queer characters and expecting to be showered with praise, there's going to come a point where people stop recognizing themselves.
Straight, cis people often don't realise how weird they are from the outside because they have no media offering them that perspective. There are so many things which a queer or trans person just has to get over or deal with in the course of growing up which a cishet person never does, and it almost always produces a different perspective. If you write queer characters as straight characters, then there's a risk they will just seem closeted, and being closeted isn't an endearing personality trait.
The same can be applied to Cyberpunk, because to me that "Mix It Up" ad, showcases the total freedom people have over there bodies in this world.
Firstly, it's selling a drink. Again, if it was selling something relevant to the image, like sexual services or cyber-dongs, maybe it would make sense. But I don't see what the connection to bodily freedom is.
Secondly, if the intention was to showcase bodily freedom, it doesn't do that. Kind of the opposite.
Like, it's weird that you can't see this, because you were just talking about how you don't find a character's gender or sexual identity important. That poster makes it important, it's not just evident but cartoonish absurd and exaggerated in a way that is clearly deliberate. In a world where people have actual freedom over their bodies, it wouldn't be important. Showing a feminine person with a penis wouldn't be absurd, or funny, or brave, or anything really, it would just be a normal feature of this society. It wouldn't be worthy of comment unless it was relevant, it certainly wouldn't be something you need to exaggerate.
In EYE: Divine Cybermancy, all the adverts for the various models of guns you can buy have sexy women on them and absolutely awful slogans because it's a joke about how stupid everyone in this universe is (and, let's be real, because the developers were baked). Best case scenario, what you're basically suggesting is that Cyberpunk 2077 is doing the same thing without realising it's a joke.