When I started in 1997 I was told about the age demographic that was going to create jobs soon and I am still hearing it, I don't really believe it though.
My own observations suggest that it is harder now to get your first IFR job than it was then (no IR required in them days, pre JAR),
Jobs seem to depend more on the boom/bust of the North Sea more than anything else, booms I can remember in 1998, 2001, 2005-7, 2012-
I reckon the age thing is just a lot of bunk