Interesting thoughts. Ditching taxonomy is not likely to happen so long as Dries is keen to make Drupal and Drupal Gardens as accessible as Wordpress, as well as developing Drupal as framework. New users should not need to use Views and should have the equivalent of WP 'post categories' out of the box. If Drupal were only seen as framework, rather than trying to be an easily usable CMS at the same time, your arguments may have more chance of being adopted.