I think when some kids say "ole skool" these days they use it as a fashion statement, or to make them sound older than they are. Many people in hip hop used "old school" to refer to old school rap, which is notably better (in many's POV) than new school rap, and it just stuck. Now they use the word to describe anything that's better, sort of like a synonym for "cool" (e.g. That's old school = that's cool, in a way). I doubt they are saying it to say what old people should be like, or to be confrontational with old people. Its just in my experience when kids say "that's old school (yo)" lol, it usually means that it imitates the past, it's more mature, more experienced, etc. They are Not trying to tell old people how to be.
my 2 cents
my 2 cents