This entire 'subconscious sex' concept fails completely though because it is built on a false categorisation. It is really very simple.
A person in a male body can never have a 'subconscious sex' of female because it is simply only ever their concept of what a female person's 'subconscious sex' would be.
And I am sure that everyone has read this following plenty of times now, but, this remains true for this 'subconscious sex' as much as it does for just answering the usual feels like a woman posts.
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No male can ever experience life as a woman. They can only ever experience life as a male person who believes they are a woman. (Therefore, their 'subconscious sex' is only ever what they believe is how a female person lives, experiences, lives and feels)
Even when they 'act' like a woman, they are acing as they believe a 'woman' should act.
Even if they are treated 'as a woman' by some people, they are being treated as a 'male who presents as a woman and believes they are a woman'. Because their every reaction is based on that. Not on them being female in any way.
Even when they have extreme body modifications, it is to be their own concept of what a female looks like to them. It is not what a female is. How can it be?
The only way a person can experience life as a woman, is to have a female body, formed around the production of large gametes, even if it doesn't produce those and to navigate their life based on the decisions they and society makes that revolve around them having that body.
A male can conceptualise what it might be like to be a female, but that is all it ever is - their concept of being female.
They may do it because they don't feel they fit into how they conceptualise how a male person interacts with the world (ie. their own stereotypes around being male) or they do it because they want to be seen as a female (using their own stereotypes of how a female navigates life). It really doesn't matter though. Their motivation is irrelevant to the outcome. And I consider the outcome can only be described as misogyny.
Which is that they will always be just a male who believes they are something they are objectively not.
How can the material reality be any different? This is why someone's gender is only based on someone's philosophical belief. And philosophical beliefs are fine for people to hold, but not one person in the UK has to comply with another's philosophical belief.
The logic cannot be any different than that I am afraid.