Why is casual racism/sexism more accepted in video games than other forms of media (these days)?

I think you've basically covered it. Almost every review takes issue with or makes note of the sexualized outfit and perspective, but notes that the rest of the game essentially does nothing to add to or subtract from that depiction. It's not otherwise a horny game apart from the extremely horny visual depiction.

My understanding is that the character is specifically modeled based on Shin Jae-eun's body fwiw.