You purposely ignored the warning which are the very first words on this page, decided to keep playing despite being told what kind of a game this is, and then got upset when you were given the content you were warned was in the game you decided to play, this is entirely your fault for being upset. If you chose to ignore content warnings in a game, then that is your fault.
People are allowed to make disturbing content, and having a psychological horror game be horrifying is the entire point.
Just because someone made a "disturbing" game doesn't mean the person behind it is a bad person.
In NO WAY does this game romanticize or glorify what is happening to this child. it is disgusting, and horrific, and nothing about this is saying "HURTING CHILDREN IS A GOOD AND OKAY THING TO DO". not once does it even insinuate that.