Autarchy of the Private Cave

Is that only me, or WordPress is really leaning towards the Drupal ideology?

Here’s what I mean:

• user levels were changed to user roles – just like in Drupal
• now, instead of categories and just recently introduced tags, the word ‘taxonomy’ is used – which is a Drupal slang
• ‘widgets’ work just like ‘blocks’ in Drupal – even style IDs are assigned the same way, e.g. id=”widget subscribe_to_comments_widget”
• (add here the similarity you found yourself)

I wonder, what will be next. PHPTemplate support, as default theming engine?
Or no-backwards-compatibility policy?
Or, best for WP users, advanced Drupal-like caching and throttling techniques?