This article is terrible. Of course the body and brain are complicated. But that doesn't mean they don't operate based on rules and systems and mechanics. Just because we can't control how the machine works 100% doesn't mean we currently aren't "Hacking" it today and won't be able to even more in the future.
Just skimmed the text and read the comments here TBH, but I can already see were this is going. Of course the brain is complex and we don't understand it and even if Elon might not succeed with Neuralink (in the decade to market plan) it is still worth exploring. So stop hating gizmodo.