So here's a question. As an XP person, my consulting leaned into saying people should for real try all of XP for a while before passing judgment. I think that was fairly common, back in the day. The Scrum approach was different in two ways. First, they were clever enough to realize they could get rich through the "certified Scrum Master" scam. I'm going to leave that aside. The other way is they didn't make teams do the hard technical stuff.