I've witnessed this phenomenon at work when asking other people for help with problems. My coworkers come up with more creative solutions than I did, much faster. The only problem is that when I'm asking for help with stuff, it tends to be tricky stuff with lots of edge cases. My coworkers' solutions tend to not actually work...

Which is not to say that there isn't value in asking them. Sometimes their solutions that don't work can be modified into something that does; or their crazy non-solutions can spark some inspiration on my end.

My theory as to what's going on here is that when you are responsible for the solution, you spend a lot of time thinking about what could go wrong, so your thinking gets constrained. When you are solving a problem for someone else, you're thinking is much freer, because frankly you don't give a damn. You are much more likely to come up with a unique, novel solution. You are also much more likely to deliver a solution that is actually disastrous.

My point being: I think there's room for both associated and disassociated thinking. This article seems to think because there was one series of studies showing some benefits of disassociated thinking that disassociated thinking is just straight up better.