But with open-source or leaked models, you won't have to try hard at all. Downloading a file is not trying too hard, anyone who is interested will be able to download and run one of those models easily.
So what? We're never going to be able to stop a dedicated user, but if chatbot pseudo-relationships are really an issue we can stop incentivizing their distribution. We don't put ads for fentanyl on busses or let pharma companies give out free samples.
Pharmaceutical companies run promotions and coupons all the time. For prescription medications the samples are just given to physicians who prescribe them.