coping kinks aside, i think an actually twisted and immoral ending adds character to a total psychopath, it just helps people genuinely understand that he's someone to be careful with and/or far away from and that he's not some glorified cyberstalker like i said before
i dont support what the ending showed, but i support the fact that you're not scared to add something so horrible but so fitting :D
(oh, and maybe i recommend adding an in-game trigger warning, since if i recall correctly it's not currently a feature, and it would be very helpful for some!)