> I've closed off access to issues and discussions.
> I don't want to continue allowing an online environment with such an absurdly skewed gender representation. I find it intensely unwelcoming, and it's not reflective of the type of working environments I value.
That's the totality of the message.
Weirdly enough, the concept of "an environment I don't personally find welcoming is unwelcoming — and better gone" strikes me as rather unwelcoming and indicative of a diet in severe need of iron-y supplementation.