Only if you want to start circumcising mosquitos here.

Classical as a word typically refers to the period of time the Greeks were at their height.

Classical Rock uses the spirit of the word Classical to describe this era of rock and roll as the basis for modern Rock and Roll.

Now if you want to use the term classical rock to describe an era, then no that era is gone. If you want to decide that only the period of the 70s and early 80s that punk was as you describe it then SURE punk is dead.

But punk started before the 70s and will continue long after you and I are dead.

By the arbitrary definition that punk was a genre of rock music that existed only during a certain time period… sure it was and no longer is.

I simply champion the idea that labeling punk as a genre is ironic in and of itself, to say it fits in a narrow definition is also kinda ironic.