What do you think of Pokemon obviously designed to be sexualized like Lopunny? I think it’s really creepy myself, and can’t stand playing with them in Pokemon amie because they keep giving me giggles, hip shakes, hair/ear flips, and generally acting like they’re trying to flirt with me. Not to mention in their first sprites, their elbows were deliberatly placed to make it look like they have breasts. It’s really screwed up, and feels like a desperate attempt to pander to “adult” demographics.
To be honest it’s not something that’s ever bothered me a great deal. I mean, I think it’s silly, and doesn’t make for interesting designs, but I’ve never had the kind of visceral discomfort with it that you seem to. Nor do I quite see what you mean about Lopunny’s fourth-generation sprites, although I suppose they could be taken that way. I will say it seems like a very odd choice to me, given the ‘family-friendly’ image that Nintendo has always tried to cultivate, and Game Freak’s obvious discomfort with saying anything explicit about how ‘breeding’ works. The disconnect leads me to suspect that there’s some level of cultural nuance here that that the Western audience just isn’t quite getting, and I don’t really know enough about the Japanese to probe the matter any further.