Well to an extent the point is that emerging evidence does support the position that chromosomes are somewhat in your favour because as I observed there is now some good research data to indicate that there are genetic factors which influence the development of the brain outside of simple physical sex.
These are NOT completely synonymous with the known sex hormones and chromosomes. So just because you are XX or XY this does not correlate to the necessity that your brain will follow that developmental path. Quite soon there are likely to be primitive diagnostic criteria that could indicate a risk factor to transgender development. The trouble is this will tend to become a two edged sword - because there will then be those who will argue for genetic screening and selective medical abortion to eliminate the condition.
Their argument will be further strengthened by the apparent distress the condition creates.
This is one reason why I have worked hard to perceive, appreciate and emphasise to others, the positive aspects of my androgynous childhood experience in life, because personally I would not want to have been screened out.
It may be different if one is classically trans, but personally, although there have been downsides like lack of fertility, there are also undoubted positives like no real periods, greater physical strength, a more powerful set of lungs, the fact that my relatively stable endocrine levels have helped me to somewhat defy the ageing process, etc etc...
Plus of course the biggie which was that thanks to very well informed parents I got to choose at an early stage which side I wanted to play for!