That sounds made up, the hair isn't expressed on the X gene.
Like even if that was true, if you have twice the X it would likely mean that you are less likley to be bald, the double-x gene has a protective action to some extend. If one X is fucked up, then the second x brings the desirable genes. Unless the baldness gene is a super-dominant gene.
You are kinda right.
A boys X chromosome always comes from his mother.
A girl has an x from each parent.
This is why ‘x linked’ gene faults like haemophilia are expressed in boys, but girls are just carriers.
The other X makes up for the dodgy one.
The bald gene is on the x, so a boy’s propensity towards baldness can be somewhat predicted by looking at his mother’s father (but he could have the x she got from his maternal grandma, not his maternal grandfather, so it’s not always accurate)
An Ft’M has an x from each parent, and dependent on which one is dominant, could have a propensity towards baldness from either side of the family.
So an FTM has go look at both sides of the family to check for familial baldness, not just mums.
As an example a girl can inherit BRCA (the breast cancer gene) from her mum or her dad, whereas a boy can only get it from mum.
It’s a different form of inheritance pattern to haemophilia, which is what you are thinking of.
The one you are thinking of is ‘x linked recessive’ but the FtM baldness is thought to be more like BRCA, ‘x linked dominant’
(although it’s possible that baldness is x linked dominant in men and x linked recessive in women - or dominant in both with a ‘weakened penetration’ in women, which presumably strengthens/wakes up via DHT related to exogenous T?)
Edit: The following is purely conjecture based on my small amount of knowledge in this area:
having thought about it a bit it seems to me that the 2nd of the possibilities above is the most likely thing going on with the baldy FtM’s
is that baldness is x linked dominant in both males and females and females are just missing the testosterone that activates it .
This T activation is presumably why normal male baldness begins when they reach that fully physiological adult age of around 21-24 when the last of the puppy fat goes and the jaw line shows up - in normal development, these are the strongest T years (some chaps bald very gradually and some are at the ‘shave the lot’ phase by 24. I suspect this variation is due to a genetic propensity towards DHT sensitivity)
Females finish pubertal growth at an earlier age so chuck a big dose of T on-top at 16/17 and it makes sense that they would end up balder faster than actual men a) their growing phase is complete and b) they go straight in at young adulthood male T levels, rather than increasingly ramping up from the first signs of puberty.
PCOS (which causes higher than average T levels in women but still nowhere near male levels, also affects hair, increasing body hair and causing hair loss from the head:
https://www.healthline.com/health/pcos-hair-loss-2#medical-treatment )
Basically giving girls T doesn’t make them grow into men, it makes them grow into women with an artificially induced, extreme, hormone imbalance - which is why lots of them are really pudgy in the middle - a body shape middle aged menopausal women often have to battle against (or buy elastic waist pants).
Anyway, bald chaps can be extremely hot, and while I sympathise that going bald can be stressful for a chap, women tend not to care as long as you don’t get yourself stuck in a no man’s land of denial.
Bald women who think they are men? Well, that’s gonna take a very special fetish to be considered sexy.