>not just using literally any bot to act out fetishes
The more fetishes (even the SFW ones) in the bot's code, the more likely the bot will have issues.
Pregnancy probably works okay, but hyperpregnancy is a little trickier, it's way easier just to find a bot you like, then simply DO the pregnancy plot in the chat.
Hell, I did several SFW inflation bots a while back and all of them got shadowbanned, one of them even did a "super shadowban" where the bot outright blocked anyone but me from using it.