I actually forgot about this point. R* shouldn't care though, after all they aren't gamers. They won't affect the releae.
Even without confirming, the femnazis are complaining about every girl being a prostitute or a stripper. If R* said they were going to develop a female protagonist, all of the female GTA players would automatically assume the character is going to be a sexually explicit character in some way, whether she's a hooker, prostitute, or just sleeps around. The best thing for R* to do is just put aside the idea for right now until the feminists are ready to stop complaining about it.
Maybe multiple charachters again, with one female charachter ?
I like the idea, because it's a "safe" option, giving players a choice. If it's forced on players then it will certainly affect attitudes but may also affect sales because of the ignorant population that may believe a female protagonist is a metaphor for women taking over everything