I think it's sad that people seem to have problems to understand what "inclusive" or "diversity" actually means:
Discrimination is when you don't hire talented people (or pay them less money) because of their gender, race, age or such things. Discrimination is NOT when you fail to hire talented people because they are not there in the first place.
Is this really that hard to understand?
I think it's good to be critical. If women don't apply for a conference, you should ask yourself if there is something wrong. But if you frikkin call it "Diversity matters!" and you still have no women, it's not their fault, is it? They had only a single woman submit a session proposal this year (a repeat from a local conference last year). This is NOT discrimination, you morons.
If you show me a case where women are really discriminated, I'll be the first one to fight for equal rights. But enforcing quotas when the vast majority of coders is male (and always will be) is just plain wrong and those PHP devs should be ashamed to follow a toxic trend.