Nothing willfully ignorant about it. Especially when you are looking at a mere fraction of the situation and ignoring everything else such as people looking at the tags, the other images, the synopsis, maybe were fans of the previous game, maybe they don't pay much attention to preview images, maybe they found the game on other sites, etc. I more often than not see people, especially when it comes to porn games, pissed when something isn't properly tagged or certain warnings are not provided after they tried to play the game and thought they would enjoy it. Why not present the game as it is and make that kind of thing clearly apparent? Even if that is "marketing 101" there is a much different nature when it comes to indie devs especially ones who develop adult games and get support from fans for development costs. Besides that, I'm pretty sure the dev didn't claim ownership for the OP so it is not like they personally chose to advertise their game in this way and as I previously stated, have not seen anyone else complain about that first image.