It's the other way around: you need to prove that what he says is merely feel-good baloney.
Otherwise, every person is insincere, including both yourself and I.
Side anecdote: While I haven't met and talked with the guy in person, I know a person who has. Her impressions of him was that he was an honest man who cared about his country.
Take what people say with a grain of salt unless there is reliable source that backs them up.
It is safe to assume that people with non-trivial power are very seldom sincere when making public statements.
If Dubai's elite's descendants will be riding camels some decades from now, then why does Dubai have a national wealth fund?
The truth is that Dubai's wealth fund may invest in YC or in VC funds, and some of those mocking Dubai's future will be working indirectly for the elites that run Dubai. To distract people from such master-slave reality, a bit of self-deprecation can be charming.
