That's a subset of gamers, specifically gamers who actively want a hypersexualized characters and still haven't figured out how to ignore the irrelevant products and still chose to be angered if some product doesn't fit their requirements (despite no shortage of games that would fit the bill).
The data are easily accessible, and the target group has little political power and is seen as problematic and about the only remaining legitimate target for negative discourse.
Imagine the reception that studies of female aggression get.
"What do you mean the women in this game have proportions roughly equivalent to what's actually possible in nature?!?!"