Because that's what these stuff are. A fuck you to the majority of the main game playerbase, a way to piss on them in order to show dominance.I get these are non cannon things but the entire rape shit with Abby's character feels like a giant fuck you to the fans of the main game who have been waiting literal years for the dad to make a move on her.
"You've been waiting for several years to have Abby content? Great, now here's some rape cuck shit for you. Now be a good little consumer and cough up patron money next month as well ya little shits." It's basically this scenario.