I just don't want to be hit with a wall of text every single time, it gets the point across with minimal padding (high signal to noise ratio), ChatGPT feels like it gets paid by the word and they do actually charge by token if you use the API.
As for the UI it's a take on the tried and true chat UI same as ChatGPT's, it spits the whole answer at once instead of feeding it to you one word at a time, it has an alternative drafts button, the Google it button is a nice touch and it feels quicker.