As so often Grandad, you miss the point by going straight in with your sweeping statement that 'anti male sexism on this forum is unbelievable at times'.
Saying that someone has 'balls' usually means they're prepared to tough things out. The assumption is that only men have that ability, so women who tough things out are 'congratulated' for having a male ability.
Like the OP I'm not a tory voter and no admirer of Theresa's politics or her party. She's been given a poison chalice and it seems to most of us, she's doing her best to reach some kind of resolution. That shows courage and determination. She's under attack from all sides and given there are female members of parliament in both parties, the attack isn't just coming from the men.