I completely understand where you’re coming from, I posted a comment a while back on it HERE
I still think of the Dead and the Beatles and the Stones when I hear the words Classic Rock. But then you turn around and realize Pearl Jam’s Ten is over 30 years old. In 1995 Scarlet Begonias was only 21 years old and was on the Classic Rock stations. So the question comes down to: Is it the era that you played in that makes you “Classic” or is it a matter of time and quality that defines “Classic”?