There is more to Scrum than Scrum itself

It seems that in fact there should be less to Scrum than Scrum itself. A comment from Jeff Sutherland (co creator of Scrum): https://www.linkedin.com/feed/update/urn:li:ugcPost:68280204...

Teams follow all the scrum guidelines, and are then frustrated when things don't work. knowing the rules and even playing by the rules, doesn't mean you are good at something.