SSD
Why is it Balerdash to fly a 2.5 3 degree glide in a single low powered aircraft?
Its not balsderdash to fly level at 50 feet (if terrain allows from 3 miles out)
It maybe not be an advisable practice but you can do it as much as flying down the runway 10 feet up with flap!
If your saying aircraft X with full flap will not fly level with the power available I take your point but would then question why full flap before being assured of landing or why full flap at all unless on the shortest of strips when I would definately NOT !!! use a glide approach.
If your saying student Y would get into a mess stall and crash I take your point but any approach from zero glidepath to one with all drag available while managing not to accelerate will work too

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