Well, I would love to review the stats on engine failure after take off, and relate them to age/condition of aeroplane.
The older fleet, if properly maintained, is just as able, and capable of performance, as any 'newer' aircraft.
I fly a number of 'aged' aircraft, whose performance would embaress some of the newer stuff on the market. Age is not a performance indicator, nor is watching the climb rate of an ''aeroplane''.
Sorry, but I would not concur.