Drupal as MVC Framework?

Peter Van Garderen talks about Drupal as a MVC framework. His essay is well worth a reading and so are the comments. Peter writes that

I had considered Drupal as an option earlier but I had been swayed by all the buzz in the tech press and blogosphere about the new generation of open source MVC frameworks that are promising to improve the speed and quality of web application development.

Since Drupal has been around a bit longer than the more recent MVC frameworks, it never thought to sell itself to new developers like myself as a MVC framework. It started out as website content management system and has grown over the past five years into a swiss army knife type toolkit for building websites that is host to an active community of contributors.

Swiss army knife: That's to the point, couldn't agree more :-). However, he concludes that Drupal is not a true MVC framework, but that developing is promising.