I couldn't agree with you more and great words from McKenna and big thanks for Tragedy&Hope for making this great video. This message of not consuming the culture but creating your own is truly one of the most important ideas. To see, to understand, to interpret, to dance, to sing, to speak, to walk in your own way and always looking for new ways and creating new ways.
I was just earlier today (before I saw your post) writing about not consuming the old religion, but creating a possibility of living, breathing religious/spiritual life. I was not using these exact words of McKenna of "creating or consuming a culture", but the idea was similar. Here is what I wrote:
"Air is the very substance of our freedom, the substance of superhuman joy....aerial joy is freedom."--Gaston Bachelard--