For sure. It can be a balance, though. In some cases, the cognitive strain of having to copy a bunch of text from a website, go to chatgpt, select a different model (maybe), write a halfway decent prompt are enough steps in the way to justify including the Perplexity extension to do the same thing in a couple quick clicks.
Also, in some cases, CGPT currently just isn't an option. E.g. summarize this YT video. (I realize this might age like milk with plugins on the horizon)