I've been using WordPress since 1.2 and teaching it since 2005. Trying to explain somethings to beginning users is getting incredibly complex. The customizer is almost a full day alone- as is the concept of "Child themes"- at some point, WP has to realize it's greatest strength is that it was easy to use- and that's why it spread. The forcing of JetPack and the connection to WordPress.com is horrible- and big brotherish. The beauty of SquareSpace and WIX is that they have stripped away the complexities of "Front End" editing- which is something WP needs far more than the customizer solution.