I did so many drugs before 25 I've always hoped it wasn't developed by then so maybe I had a fighting chance to make the darn thing work

Is that referred to in the article? I didn't see it.

But tbh no scientific paper is going to convince me that that is true in any meaningful sense. The very highest quality *intense* creative intellectual work has always been done by the young. There are other positives coming out of being old, a few anyway. But a 24 year old brain 'undeveloped', that's just gibberish.