Plenty of folks think Musk will do something smart someday, for humanity's benefit, despite all evidence to the contrary.
I was here when the web showed up, and I can honestly state that we featured blatant techno-utopian rhetoric in nearly every aspect of the industry, as well as our underground nocturnal allegedly musical entertainment.
I now feel rather dumb, aka a product of my time, but the notion that inventing tools would lead to them automatically being used for good was prevalent, if specious.