It really isn't as unusual as you would think. Once again, there is BMX XXX which was released in, what, 2003? GTA: Chinatown Wars had you participating in drug dealing mini games on the same handheld that gave us Nintendogs and Cooking Mama. Fatal Fury 2/Special on SNES had jiggling breasts. In fact, scantilly-clad women in fighting games on Nintendo platforms are really nothing new. Games like No More Heroes on Wii had sexual innuendo as well. Even going as far back as Metroid 1, there was a code to play as Samus in a bikini! Nintendo may be more family friendly, in some respects, but all three companies do blur those lines. At this point, the only thing that would shock me would be a mass-produced game with rape (Rapeley, being an expoitive piece of garbage, doesn't count), or child sexual abuse. Other than that, all three companies have games with nudity, and all three still occasionally censor their games. I can't remember the name of the game, but I'm pretty sure that Nintendo has enforced censorship within the past five years or so.
Using such a small, insignificant piece of software doesn't really sell your point. It's like saying that Troll and I on Switch proved the point that software quality was slipping on the console. Not really. It was just a crappy game. The minute that Sony starts censoring nudity in games like God of War, or anything by David Cage, then you may be on to something.