[AnimalMuppet]

> at what point does Agile stop being Agile?

When you make it a procedure - especially when you make it a rigid one. "Let us take this rigid approach to become agile" is just as stupid as it sounds.

> nobody is going to argue that you should ship products late and with little feedback from customers.

No. But some approaches result in more customer feedback than others do. So in practice, people do in fact choose to ship with less customer feedback.