Chat bots like this, where basically they're executing a wizard type questionnaire seem totally reasonable to me. It's approachable to a wide audience, only asks you one question at a time in a clear way, and can easily be executed on a mobile device or normal computer.
I'm not sure I understand how a chat bot is better in this case. This sounds exactly what a form is for, and you can have multi-step forms or wizards.
Incidentally, a ubiquitous feature in with forms that I seldom see on chat bots is the ability to return to an earlier question and change your answer.