This is where I diverge with you in my views about some trans identifying men.
I agree fully with the core elements of what you say - sex is what's important and gender absolutely doesn't matter.
I think that we also agree, to a certain point that a lot of different 'conditions' (encompassing mental health, body dysmorphia, fetishes etc) have all been placed under the trans umbrella and we are expected to treat them all the same.
Someone who needs to live 'as a women' for their mental health is completely different to someone who claims to be trans but is quite happy to present as male when it offers them an advantage or claims to be trans but only ever presents as a stereotype or parody of a woman as part of a fetish.
However, for me, there is an inherent contradiction in your use of 'woman face', at least in context you use it above about it being utterly disgusting no matter who is doing it and why.
'Woman-face' is an expression of gender, therefore by definition if gender doesn't matter, then neither does woman-face, so I can't agree that it is disgusting in any context.
The disgusting element for me is the claim that what is being worn or how hair and make-up is used, or the surgery they have had to change their body makes someone a woman.
But if you want to wear 'women's clothes', use make-up and wear your hair in a 'feminine' way And change your name to a 'girls' name, then fill your boots - as long as you are not claiming it makes you female and you are not seeking to erode women's rights.
(I actually think medical transition should be banned apart from in cases where it is deemed to be the only treatment for someone's mental health and all other options have been explored with therapy OR it is as a result of a DSD where the wrong decision was made by doctors/parents at birth)
For me, being female is more than physical bodies, genes and outward presentation. Those alone do not take account of the lived-experiences, expectations and risks that women and girls live with from the day they are born and observed as being female and no-one born and raised male with ever understand that.
That is the reason that I suspect we would also disagree over Imane Khelif and Caster Semenya. I do believe that there should be discussions about whether they should be allowed to compete in elite female sport. My own view is probably not - which would be incredibly sad for them, but no different to a promising young sportswoman who develops some other condition which prevents them from competing.
However, I will never refer to either of them as a man unless they decide to transition themselves.
They were observed female at birth, they were raised female and if they had not gone into sport, their DSDs may never have been identified and they likely would have lived their whole lives as women. They have not had a male upbringing with all the benefits (and challenges) that entails and they would have no more understanding of what it means to be male than anyone born and raised male has of being female, regardless of the Y chromosome.
That is my view at present based on everything I've read / everyone I've spoken to on both sides but I am not dogmatic in that view and it may change (in either direction) in future depending on any further understanding that I develop.
Although the OP.may have started this thread in bad faith, I agree with another PP that it does seem to have turned into an interesting discussion about different GC views.