The hype is not going to stay forever but I think the personal assistants like Google Home or Alexia will stay, virtual friends like Replika will stay, and also cost saving in service are going to stay despite some customers preferring humans.
Chatbots replacing apps didn't happen.
However, if your chatbot performs terribly bad in user tests, you may want to remove it from your platform. A good chatbot can do great, but a bad chatbot is bad. And it's not necessarily bad because of the technology, it's most likely simply a bad chatbot like many other chatbots. Making a good chatbot is not trivial and requires a lot of work and user testing.