Hi Susan.
You capture the issues well, IMO.
I think that the Agile _movement_ is in decline.
Agile ideas will continue to exist.
The same thing happened with the Lean-Six Sigma movement: the movement vanished - almost overnight. But to this day, a lot of the ideas are still in use.
You also capture well the varied views on what "Agile" is. Is it the Manifesto? Is it Scrum? Is it a mindset?
It is all those things. It depends on the views of who you talk to.
And that's part of the problem: that we expect "Agile" to be what _we_ individually view it as.
But if one instead talks about _agility_ - which is not the same as "Agile" - then one can have clearer conversations.
In our work at Agile 2 Academy we found that actual organizational agility results from a set of leadership behaviors. Those behaviors generate the culture of the organization. These are the common behaviors that we found among highly agile companies: https://www.agile2academy.com/the-evidence
I think that instead of talking about "Agile", we should shift the conversation to "agility". And instead of studying someone's "manifesto" or someone's "framework", we should look into the field of organizational culture, leadership theory, behavioral psychology, cognitive science, and operations research. The answers to our questions are there - not in frameworks or a manifesto.
And the answer is not simple: it cannot be stated on a one-page declaration. And it always depends on the situation.
Very best,
Cliff