Except that in some cases (example: GDPR) there is a legal obligation to explain rights.
One such rights is the right to be forgotten (i.e. you can remove your account)
The terms of service document (that all users claim to have read and understood) is obliged to explain rights. The chatbot is not.
The terms of service document (that all users claim to have read and understood) is obliged to explain rights. The chatbot is not.