If you fly a light aeroplane like an airliner and drag it in on a 3 deg approach, you will undoubtedly land short.....
If you fly a glide approach, you should get in OK.
Between those 2 extremes it's your choice.
What really happens between those extremes? Say I have an aircraft with a 7 degree glide -- if I set up for a 6 degree approach and the engine quits, don't I end up going through the boundary fence just as if I'd set up a 3 degree approach?
The problem is therefore that either you have to fly every approach as a power-off glide, or you have to accept the risk of an off-airfield if the engine quits. I do wonder whether, for larger engines at least, the operating regime involving repeated glide approaches puts you at a greater risk of an engine failure overall.