People and schools who have access to iPads and chromebooks can thrive while those populations without access don’t.
I mean, I teach using a mastery approach at the university level - I’m all in. But I live in low income neighborhood and not everyone in the area has their own iPad or Chromebook or constant internet access described.
Hell, after a grocery store closed a couple years ago, we’re a “food dessert”
So yes, mastery learning is great. Technology is wonderful. We need to help the poor (… like please increase school funding!)