"When we exist in public, we don't actually in practice categorise by (the massive oversimplification that comes under the heading of 'genetic') sex. We categorise by gender expression, which is a chaotic and vague mess of different factors and stereotypes. If a person looks 'male or female enough' to assign them a category one way or the other then, because we have been trained from birth to see humans as only one pole or another on a range of expressions, we do so."
What planet is this on?
People reliably can discern male people, however they are dressed.
However, it is irrelevant how someone 'perceives' you. If you are male, you need to stay out of female single sex spaces, not take opportunities that have been set aside for female people due to the oppression of female people for more than one millennia and you should not use the language that female people need for themselves. It really isn't that hard.
You made a decision to modify your body, however, that is not the issue for female people to resolve. YOU made that decision and you need to respect that female people have needs and you are causing female people harm with your decisions.
"This approach of hammering every person into a 'male' or 'female' hole is increasingly revealing itself to be woefully inadequate - not just ideologically, but practically. It feels like stumbling across a vast quarry in a previously flat landscape - even if you fill the quarry back in, it will take a long time for the ecosystem to stabilise and it will never be quite the same again. We can't just return to a 'binary' world - because it was always a strained fiction to begin with."
No. Again, you and some others have made this issue for yourselves, however the rest of the world in general doesn't share your belief that you have become anything other than a male who has modified their body and has tried to live according to their belief.
This "it will take a long time for the ecosystem to stabilise' is a false impediment that you are trying to now force others to also believe. No. It can be very easily fixed. Male people respect female people. It is that fucking simple. Stop forcing us to accept you into female single sex spaces, stop trying to force anyone to accept that you are a 'woman' because of your belief and stope trying to use our language for your self.
Binary was not a strained fiction. This is 'fiction' on your part. There are only two sexes with a huge amount of body variation. It doesn't stop any person from acknowledging their sex though.