OK.. It wasn't clear to me from what you said before that you even viewed disproportionate representation in tech as the problem. I agree with that.
However, as I said below, I think having tech conferences with women present might be more than just a trick to pretend that the problem is solved, but actually be a tiny part of the solution.
51/49 ratio among the population -> 5/95 ratio in tech fields -> 50/50 ratio at tech conferences.
Problem solved? Or did we just skip solving the problem and direct the audience's attention to the sparkling fire?