Making change solely for the sake of change is gambling with an unknown risk.  I don't know about you but I'm not one willing to risk the next generation of children's education on, what is at best, an unknown risk.
Given that education is studied and tested and practiced and refined lends credence to a belief that we have the system we have not because there is a problem with the approach but with external factors outside the control or influence of schools.  For example changing family dynamics (millenials are becoming parents and have a known issue with instant gratification and self-entitlement), a historic problem with nigh parental abandonment (except when their child may be anything less than perfect THEN parents get involved) or unstable eating arrangements (breakfast is the most important meal of the day).  There are many considerations that indicate Devos's approach will not be sufficient if not counter-productive.