Yup. My current employer, while pushing hard for diversity, is doing pretty good at pushing to improve the company to attract said diversity, instead of just widening the net and bringing whatever they catch.
We have a pretty high ratio of female engineers (and even better ratio at the lead/director/vp level) for the kind of company we are. Not 50/50, but higher than the Google and Facebook of the world.
Pretty much all of the female engineers I've interacted with, including our junior ones, were top notch. High quality code, super hard workers, cares about the craft. Good stuff.
On the other hand, my previous employer had put a diversity activist in charge of hiring female engineers. Not only did we only have a handful, while half of them were really good, the other half were hired through shitty coding bootcamps, or were self "taught" (as in, they had read a book on coding and that was about it). Terrible. We had to lay off a couple within a few months, some were burning a crazy amount of hours in training (a lot more than a junior engineer should). In the end, we ended up with 2 in a team of 100+ Not cool.