The one thing to be said in favour of this method is that one is better prepared for a loss of engine power.
Myself was taught to land my microlight with no power at all, and slightly too high on final, then sideslip to land on the numbers (if any!) or even before.
Should I find myself too low and/or too slow on short final (iow, short on energy, as rightly pointed out above), reducing flaps would be my natural reaction. None the less one hand will always be on the throttle, during landing.