What is this actually? You just can not blame opensourse CSM to promote your craps. This is bullshit. You have the option how you will store your contents. WordPress offers only 12 DB tables by default and You have the options to extend the DB. Contentful is providing a simplified api which is premium and closed. You can just write about that but to promote that you will write negative sides of the Drupal / WordPress that is totally crap.
Get a life Davide Borsatto