I think she's supposed to be an evil cyborg or something, and that seems to be the excuse people in the comments are running with.

Its much worst if its Frost you talking about. She was a normal character who was brought back as a cyborg randomly in the new game with a new motivation of being the better cyborg version of sub-zero with her own group of cyber frost ninja that are supposed to be superior. The cast basically treats her in game as little more a joke and she has short hair so the fandom treats her as the feminist, karen imitation of subzero. Given her new story it was probably the developers' intention.