That's exactly waterfall - make a plan up front, commit to it and focus exclusively on delivery. Scrum does that because it considers waterfall on a 2 week cyc

That's exactly waterfall - make a plan up front, commit to it and focus exclusively on delivery. Scrum does that because it considers waterfall on a 2 week cycle to be training wheels for people who have been doing it on 6 month increments and because it considers that "closer" to agile.