UQD, thing is progress is achingly slow. If we leave it until it 'happens' to be a woman MP, cabinet minister or PM, it won't. (And yes, I do remember Thatch, but she really was a one-off in all sorts of ways. Thankfully.)
It doesn't just 'happen' to be a man who is 99% of time chosen to be a judge, a company director, a member of the Cabinet, a chief constable, whatever position of power and authority you choose to mention. It's the result of centuries of discrimination.
Even if you are an optimist and think discrimination has been halted, clearly we are still living with the effects. So we either do something about that, or just wait for it magically to sort itself out.
I'd like ds to be PM one day (actually scratch that, but YKWIM). But I'd also like him to live in a world where his future wife (assuming for a second he has one) has an equal shot at the job if it takes her fancy, and where his future daughters (see earlier caveat) get to be astronauts, or company directors, or otherwise in charge in some way if that's their thing.