If some organization isn't meritocrous in how it promotes people and participation, the solution is to make it so. And it will take time for the effects of the previous bias to unwind.
There are a number of papers (and I'm very afraid I'm on my phone right now, so I can't cite them. I am sorry for that) which show that things like severe gender imbalance are not self-correcting systems in the case of extreme bias -- you have to push them back closer to 50/50, but then the system will remain balanced.
This makes (to me) intuitive sense -- current staff / managers will tend to employ, and promote, people "like them", creating a self-perpetuating system.
The problem is going to remain - Where do we draw the line? Where does pressure towards the center start to hurt progress because of pushback? I'd posit that much of the "Black Lives Matter" debate is actually this debate - But that the communities are speaking past one another. The places where Black Lives Matter is considered axiomatic are already past that line, while the places where it's viewed with disdain are where racism is still firmly rooted.
Developer hiring is pretty rigorous compared to a lot of fields where the process boils down to "turn up, is the candidate presentable and interested, do they avoid saying anything dumb in the interview, do they have a good CV, hired". People are asked to actually demonstrate their skills during the hiring process, for instance, something a lot of job interviews lack.
Moreover, the demand for skilled talent is enormous. All sorts of people who are kind of weird or anti-social get hired as programmers when they would struggle to get hired as, say, business analysts or salespeople, simply because people want software and beggars can't be choosers.
In such an environment, implying that the industry is not meritocratic or hopelessly biased against women is especially silly. Women programmers are sought after everywhere. They already have the playing field tipped in their favour in precise, specific, concrete ways. The idea that there's some impossible to see glass barriers stopping them from getting into programming is never nailed down with specifics, probably because no such barriers exist.