Sounds like a case of deciding who has the burden of proof :)
I often see this view from Bitcoin enthusiasts, and especially Bitcoin developers. We can just as easily flip this and argue:
Bitcoin developers and full node operators can only act in ways that maximize the value of BTC, in the limits of their understanding of what affects the network’s value. This means there’s a real chance that too many of them make the wrong choice ending up with the exact opposite result.
Therefore, if you wanted to convince me (as well as many others) that it’s a good idea to give Bitcoin developers and non-mining full node operators (and them alone) such powers, you’d need to present a pretty convincing case that there’s no need to compare them to a child with a box of matches.