[Vicky.]

As a side note, do you know you are actually a 'terf' for identifying a need for sex segregation in sports?

And may I suggest

and how would it negatively impact me if he came to a male only event?

Maybe it wouldn't. Can you see how it could be problematic for a woman only event to have men there? Especially, for example a lesbian event. Where the women there are already hassled by many men on a regular basis simply for refusing to worship the almighty penis?