I commented on it before in a sibling comment.
Also, please link the actual manifesto, not the intention behind it.
And that can be paraphrased as "People over tools", "Documentation doesn’t matter as long as it works", "Who needs a contract? Just collaborate with the customer!", "Plans? Why? Just follow the latest trends!"
And I have to disagree with them in every single point.
Documentation > Working Software (as others then can write their software interacting with yours before you are done),
Contracts > collaboration (if you want me to stay longer to do something, expand the contract and pay me extra),
Plans > change (if you just follow trends without ever structuring your design, you’ll end up with lots of code and no single person understanding all of it)