All the red herrings.
As an extremely tall woman, likelihood is that yes, people might think she's a man at first glance, because it's so unusual for women to be 6'5.
But even if this actually happened this is nothing more than an unfortunate side effect of being very, very tall.
This is not an example of how awful GC people are, nor valid reason for men to be allowed in women's spaces.
So its all a bit pointless really... unless you're on a publicity hunt.