Part of the problem with chatbots (similarly with social media and mobile phone gambling) is that dosage is pretty much uncontrolled. There is a truly endless stream of chatbot "conversation," social media ragebait, or thing to bet on, 24/7.

Then add that you can hide this stuff even from people you live with (your parents or spouse) for plenty long for it to become a very severe problem.

"The dosage makes the poison" does not imply all substances are equally poisonous.