Earlier quoted context omitted.
Why not? As long as you have lived through some period of life and can see the consequences of the choices you and others have made during that time, you can give advice. If anything, a mid 20s to mid 30s individual giving advice on college would be more relevant than a 60 year old doing the same, because college has a whole has changed so much in the last ~40 years.
What are the major ways in which college in 2015 is different from college in 1975?
[0] http://www.theatlantic.com/education/archive/2014/04/the-myt... [1] http://www.randalolson.com/2014/03/22/its-impossible-to-work...