People are coming to ChatGPT with an intent to type. Its much harder to introduce text-based interface to otherwise click-based interfaces because of the friction. Thats why chatbots often fail to gain adoption, because they are a byproduct of the product team being lazy and not thinking through the UX.

I 100% agree that grafting a chatbox on an existing app that wasn't meant for it sucks. (I'm working on an AI app where I set a "no chatbox" constraint, see my profile.)

However, I think a lot of people are willing to type if it will do something useful they can't otherwise accomplish. And: typing gives you user intent, very valuable.