I hope Mr Jacobs ends up serving several years (5-10 seems reasonable) to very strongly dissuade others from having similar ideas in the future. General aviation is already a relatively high risk activity without bringing reckless attention whoring influencers into the equation.
As for your comment about sentencing in California, that possibly says less about what the punishment for recklessly endangering lives and property should be than it does about criminal sentencing in California, in my opinion. One might also suggest that putting completely innocent lives at risk over YouTube clicks is something that would be absolutely harmful if enough people engaged in that sort of behaviour, and to that extent I think that a sentence that corresponds to what one would receive for certain kinds of sexual assault is not inappropriate.