This seems like going overboard for a game where you never even see your character except probably in mirrors. But then I feel that way about FPS game character customization in general.
Cyberpunk 2077 is ostensibly an RPG, and I'll be approaching my playthroughs as such. With that in mind, the ability to customize my character thoroughly, and in line with my own personal headcanon and roleplay, is important to me. Irrespective of how often I'm going to end up seeing my character in 3rd person or otherwise (which, given the details we've heard and seen, will be more often than some people realize).
I tend to play Bethesda's open-world RPGs in first person the whole way through. With the exception of Fallout 4, that means I basically only ever see my character's outer appearance while browsing ingame menus. That doesn't render my ability to customize my character pointless, though, because knowing what I look like, and how that might relate to my character, does make a difference and inform my thoughts and occasionally my actions. (Funny enough, I have an example of that - during my last Fallout: New Vegas playthrough, I played as a straight-up cowboy. Capable of growth or change, but initially stereotypical, sometimes to a fault. I had some fun planning that character, and I decided it'd be funny to give him a bad haircut with a receding hairline, to help justify his penchant for wearing big, goofy hats, and for preferring them over other available headwear.) I'd much rather have customization options, than be resigned to playing an open-ended RPG with a preordained character, whose thoughts, decisions, and capabilities I can choose to determine - but whose actual appearance is set in stone.
It might sound strange, but options such as those described in the OP of this thread are also something I could come to appreciate from a roleplaying perspective - in a game that basically looks to be about the commodification of every aspect of the human experience, sexuality included.