The lack of flexibility that you refer to is the price you pay for CCK and Views. I've used both Drupal and Django to complete major projects. You can use Drupal as a framework too, so in my opinion the two are absolutely comparable.
Django has a way better database abstraction than Drupal, follows more modern programming paradigms like OOP, MVC etc, is more flexible, and Python is just straight up superior to PHP.
...but I still usually use Drupal if either will do. It just gets the job done with less time spent, and works and performs well. Django has nothing like Views, and Drupal's form api is just light years ahead of Django's. Creating multi step ajax forms can be done without ever touching the markup or writing a single line of javascript in Drupal, and presenting dynamic lists to the user can be achieved without even leaving your browser.
Drupal has a much greater deployment rate than Django, not just because of PHP's popularity, but because it actually does some things really well.
My time is precious, and the end user doesn't give a damn as long as my system works.