You sure don't understand how history and culture work. Which is better: to remember and explain for future generations how and why things are the way they are, or to go on blind puritan crusades and stamp out any memory of how things have gotten the way they are? Context is an important part of history, stamping out the parts you don't like do nothing to inform ourselves of where we fit in. Nobody is telling you to do drugs and that is not what honoring Kesey is about. If you can't separate the two then you have a very narrow and reactive worldview.

By your logic we should probably rename a lot of our landmarks and street names given all the ties this place has to racism and the KKK. 

But let's be honest. This isn't about history or culture, this is about you putting everyone down and externalizing your problems to try and make you feel better about yourself. It's easy to blame all the problems on the "hippies" instead of trying to be a better person yourself.