I too thing the agile etc is about incremental "Doing stuff"

Your statement: Flaw #3: Product can’t be defined by what can be accomplished by an arbitrary number of people of arbitrary skill and experience in a two-week sprint.

Seems so spot on. The "incremental improvements" of 2000's.

Funny that at OOPSLA conf in Seattle 2000 or so: inventor oo team programming, lived by himself in an Oregon wood cabin.