Once upon a time, society taught respect for one's elders.
Whilst it is only reasonable for there to be a natural throughput of pilots, airlines will invariably prefer to retain rather than to recruit. Particularly should they ever have to face up to the responsibility of actually training their future workforce.
As for the childish comments made by lambourne, I can only surmise that the 'gummers', of whom he is so openly contemptuous, have considerably more patience and tolerance than he does.
Going out of your way to cause friction on the flight deck is utterly unnacceptable and wholly dangerous; this idiot should be removed from flying duties forthwith.