To clarify, the original use here was "absurdism may now be part of our youth culture", which is certainly something one could argue, but I'd strongly disagree with.
If he wanted to use the definition you're constructing, I think he should have said "little absurdisms like this are a common part of our youth culture". That, I could agree with.
I didn't realize this would be controversial. I meant "absurdism" in a non-philosophical sense. The way you phrased it -- "little absurdisms like this are a common part of our youth culture" -- sums it up perfectly.