Out of interest, does anyone have any statistics for how many GNC men have been assaulted or otherwise harmed when using male spaces?
We can't say with certainty because the only thing we have data on are incidents reported to the police.
Police Scotland confirmed in an FOI a while ago (I think it was a For Women Scotland one) that there have been no reported incidents of any men with the protected characteristic of gender reassignment being assaulted in men's toilets.
However, as I said that doesn't mean there weren't any at all, just that there weren't any reported. And if you think about it from our perspective, we all know about incidents happening to women that are not reported. I know of at least one serious assault by a man on a woman in a women's toilet that wasn't reported and have been told about others.
The issue is not the same obviously as the former involves a same-sex assault in their own space and the latter an opposite-sex assault in the space provided for the opposite sex. And the power differential between men and women means that the risk of harm is greater for women than men. Which is why we should never turn toilets etc into mixed-sex spaces.