There are 99 thousand demos in total being reviewed. By-and-large every single professional map played since 2015.
You're not entirely wrong. In her entire career, one of the most active and veteran female players, zAAz, has only played 210 official maps. Out of 99 thousand, that equates to only 0,21%.
Considering a lot of these teams play without coaches, and the fact that a lot of them were played on LAN where coaches on PCs are not allowed, I expect very few female demos to be reviewed.
Still, the few that exist will be removed and it's obviously possible we see a ban, though statistically highly unlikely.