Mullenweg's behavior is poor, yes, but I wonder how much that will affect Wordpress's market presence. The average person who would use the service isn't likely to hear about any of this.
But, I will say, Drupal is definitely confusing at first with all its nodes and entities and content types and poor documentation and so on. But on the other hand, it doesn't really force you into anything. You can build almost anything with Drupal, which I think makes it a great CMS.
https://new.drupal.org/drupal-cms
Going to look into it in the next few weeks as a possible alternative.