I think the fact that Airservices are taking people well out of the 'ideal' age bracket says more about the company's present staffing position than anything else.
Aside from the fact they are less likely to get through training (and they are less likely), how much dollar value do you realistically get from someone with an initial rating mid 40's then already at 50 by the time they reach a reasonable level of ratings and experience.
They're arent exactly grabbing people from the young, uni-qualified, career minded pool they say they are looking for. Beggars cant be choosers I guess....