Earlier quoted context omitted.
I'm not sure you are following the Elon-Solar City case if you think Elon's only sin is being a dick on Twitter. Or the original $420 funding a share saga. Elon Musk's repeated fake-it-till-you-make-it behavior and the unwillingness of regulators to crack down on it spawns Trevor Miltons.
This has been going on since time immemorial. A part of me thinks it's a necessary evil in a world where people won't fund revolutionary ideas. However, that also means Milton and Holmes etc.
Trust is fundamental part of markets and is basically its own interest rate. The more people can trust one another, the riskier investments people are willing to partake in.