To me, 30% does absolutely not seem like a large discrepancy if there's push for inclusion of more women in Wikipedia and if these efforts are trying to compens

To me, 30% does absolutely not seem like a large discrepancy if there's push for inclusion of more women in Wikipedia and if these efforts are trying to compensate a 4:1 discrepancy in current articles. At that point you'd need several times more women's articles than you currently have so the idea that slightly more poor quality articles may be being deleted is definitely one of the obvious options.