What makes playing those ok and this not? Some combination of being an easy target, and giving the murder simulation a slightly more depraved coat of paint tha

What makes playing those ok and this not? Some combination of being an easy target, and giving the murder simulation a slightly more depraved coat of paint than normal. Even before Valve took this action, the game "Hatred" had become a political football of sorts. In the larger game development culture a set of social views have become fashionable that like to use social pressure to police the content of games. The existing games do get heat, but I suspect there is a combination of both being grandfathered in, and that they are large properties/genres with publishers that can afford to weather the criticism. Also, it's a much bigger risk to Steam to de-list popular titles from publishers that have or would like to have competing digital distribution platforms.