I'm learning in a C172 in Canada and that isn't a technique I've heard off and god knows I've been through enough "techniques" trying to nail those elusive landings.
I'd want to know what is it that he considers "unsafe" about your landings.
Centreline? landing with side load on the gear? no flare and too bouncy? flaring too high?
Without that information anything else is pointless speculation. If he can't tell you then that IS a problem.