"hubris" could be defined as insisting that a product that has cost rather a lot to not yet be developed, that has taken rather an extended timeframe to not yet get to market despite not having any funding issues is a quote "world beater" or will ever be one.
Common sense suggests that said product is rather more likely to be a dud than a good un.
If the F35 was a purely commercial product, development being self funded by the company seeking to make a return on selling the product, it would have been canned long ago.
Anybody with a modicum of business savvy can understand that.
That fact in itself screams dud.