None of the above is an argument for using the glide approach in favour of a powered approach.
The best approach is the one that brings you over the hedge at safe altitude and airspeed and provides a safe touchdown point.
I went into LHR once in a C172 and they asked me to keep 120 kts for as long as possible to the threshold, I couldnt really say sorry i only do glide approaches!
The only argument I can see for glide approaches are training and practice.