Tbh the whole "Peach corrupted by Bowser" motif isn't really anything particularly creative or new. I swore I had seen something like it before elsewhere, probably on Tumblr. I took a cursory glance and it seems there was already quite a bit of stuff like that for a while now and most of it porn. I won't link to it but I'll put cropped samples from stuff dating to 7 months ago to 5 years ago.Yes, I understand that, because I personally love the design, and I stand for my opinion. That doesn't break my point, though.
Also, when I think Bowsette, I think of this kind of artwork, not the nsfw and erotic aberrations: