We don't even know what "thinking" really is so that is just semantics. If it performs as well or better than humans at certain tasks, it really doesn't matter if it's "thinking" or not.
I don't think people primarily want to use it for decision making anyway. For me it just turbocharges research, compiling stuff quickly from many sources, writes code for small modules quite well, generates images for presentations, etc, does more complex data munging from spreadsheets or even saved me a bunch of time taking a 50 page handwritten ledger and near perfectly converting it to excel..
None of that requires decision making, but it saves a bunch of time. Honestly I've never asked it to make a decision so I have no idea how it would perform.. I suspect it would more describe the pros and cons than actually try to decide something.