Not just any nutjob. He is (was) the officially annointed LP candidate for governer of California. One may safely assume he didn't tumble out of a dumpster yesterday, stagger into California LP headquarters, and stagger out bearing the LP's standard.
Influential libertarian Californians have watched him over the years, liked what they saw, and thought to themselves, "Here's a candidate who has persuasive ability, somone who can represent the best the LP has to offer the citizens of California."
Or maybe he did tumble out of a dumpster, stagger into LP headquarters sucking on a doobie the size of a firelog, and announce his entry saying, "Awwwwriiiight, Dudes! That's killer weeeeed! Does 'LP' stand for: 'Let's Party'? That's what I'm sayin'!"
If so, he likely was made candidate for governor by acclamation.
Nutjob?! He's the Libertarian Candidate for Governor of California, the most populated state in the nation, and the world's 7th or 8th largest economy.
Now you dismiss one of your own as a nutjob, but other Libertarians obviously think highly enough of him to support him for Governor. If he's one of the best that Libertarians have for the job in The Golden State, then Libertarians better be prepared to be laughed at.