It's not enough that music is of a time -- it also has to be good on its own. The deep resonance of the chord changes, the perfect harmonies, master guitar riffs, intriguing lyrics... there are reasons these songs are still with us.
I love that Matt and Trey do not care who they offend in the pursuit of amusing themselves and a watching world. I support them with all my heart & soul right until the point where it puts me in any actual danger.