Hmm it sure has been long since we had stories or works with shell marisas, probably those late stories of "shell marisas" stopped being liked ofr being a burden and cheaply mass produced may had hinted a shift in the fandom about how much they "like" to have them in stories...
Well, now a days all shitheads do raping, slaughtering and pillaging, so maybe it stopped being an "alice shithead only" deal.
Back in the day, only Alices would be linked to the idea of raping, other shitheads wouldn't do it, closest being the "fuck and leave" Marisas, but they are more like those douches that knock up a chick and run away instead of taking care of the baby.
Is it me or do the negative traits of yukkuri seem to be gradually becoming more and more universal between species? If even Alices are losing their exclusive rapist tendencies and sharing them with shitheads in general, it's like shitheads themselves are gradually becoming their own subspecies of yukkuri.