I didn't read that as spite, more just a humorous apology. But honestly it seems like it's just what they're working on right now, given slavery's been the theme of the past few updates. Once they've finished putting in all the slavery-related content they want, they'll likely move on to the next thing. Like how pregnancy stuff showed up in multiple updates but is essentially finished now (except for any future added major NPCs that has pregnancy content).
It's like how bestiality has seemed to be dominating a different game's updates lately but that game's makers are just focusing on finishing out their visions for the bestiality farm after which the bestiality content will dry up for a while and other content will get worked on instead. Such is the game development process sometimes.
Basically take heart slavery haters, this won't last forever. As for me, I'm indifferent to the content but I haven't been complaining about it because I know with a game with as wide ranging kinks as this one has not all content updates will appeal to me.
Meanwhile, slavery lovers, enjoy your food. I'm glad you're getting content to enjoy.