Really, there's no reason why the 'younger generation' should pick up this reference at all.
Actually, I saw Psycho over 30 years ago, and I *still* jump in the shower at the slightest sound. But I did not get the reference to Norman.
I had honestly forgotten that Anthony Perkins' character's first name was Norman. The only way I would have remembered his first name would have been by trying out various options against his last name (which who can forget?) - Bates. "Hmm... Henry Bates? Peter Bates? Norman Bates! That's it!"
- Vicki
PS - maybe the problem is not that I'm too young, but just the opposite!