Sometimes Scrum does get called "lots of very short waterfalls". It's not entirely wrong, in the current incarnation. [On edit, I see you've made this point be

Sometimes Scrum does get called "lots of very short waterfalls". It's not entirely wrong, in the current incarnation. [On edit, I see you've made this point below. Yes.] Note that until relatively recently (2020, I think), the Scrum Guide referred not to "commitments" but to "forecasts". That was a much better framing, and I don't know why they changed it.