It all sounds very similar to the presentation at our school (in NZ) on the "modern learning environment". I think it is a flaw in their logic which appears to go like this:

All children benefit from high expectations (research seems to back that children who are expected to suceed do better than those expected to fail)

High expectations equals challenge.

Therefore no-one will need more as everyone will be challenged.

there is flaw big enough to drive a truck through but somehow they don't or won't see it.