It's useful for connecting dots. Like maybe you know a few details about a problem but you're not sure where to find the information you need to dig deeper. ChatGPT is great at giving you more to grab onto. Of course you still need to think critically before and after interacting with it, but the amount of dead end Google searches I'm avoiding with this thing is amazing!
I see it as an impressive toy at this point. Not to downplay the work they've done an it's certainly progress but it suffers from the same problems as all AI so far. Seems good mainly for spam or for automating writing another dozen of those horrible motivational books. It doesn't work for search/research, it's still faster and less troublesome to do that on your own. At least if you care about quality results/correct information.