This specifically is a huge pet peeve of mine, of the "everyone is stupid except me" variety.
Agile is over 20 years old. Some companies are in double-digit years of their Agile transformation. If it were as simple as "read the manifesto and then Do That" someone would've already made it work.
Can confirm. Was at a company that hired McKinsey to help us "do agile better". We paid a million dollars for a 101 level powerpoint presentation from a guy that had clearly never done real work before.