While the first half of NE 1 makes sense (she'd eventually proactively start asking for sex and in the game even right after Anon just unloaded 17 rounds inside her), it's couldn't have been the reason why they were deemed illegal. Jun herself said that the most of the sexbots are nowhere near as advanced as she is and the hints are pointing that she's a very rare, if not unique model. Other characters who saw her ("nun", that streamer bitch, as well as the chat) don't act contradictory to this assumption. And it makes perfect sense. If their primary function is to be glorified dutch wives, why even bother making the bots that advanced?