More like wandering in the desert, hoping you find the promised land.
Been thru scrum master training 3 times, been on many "agile" teams. I've never heard this rationalization. Rather, a common justification for "agile" was you always have a working product. Which might be nice if things worked out that way.
Also, PMI style critical path worked just fine for figuring out that "straight line".
Scrum and "agile" democratized project management, empowering every poseur to claim expertise and ability. Whereas PMI required real effort to learn and master, Scrum flavored "self help" books can be flipped thru before you finish your coffee and then safely stored in plain sight on a book shelf, never to be touched again, allowing said poseur to claim the daily mutant chaotic dysfunctional mismanagement that they've always done is now "agile".