Why the outrage?? This is INGENIUS!
Would you like to have a homeless guy sleeping on your porch...?
Invites lawsuit & controversy, is an eyesore and requires damaging a building to install (so much for heritage), does nothing to solve homelessness, and is thwarted by a bit of sheet that anyone could swipe from a building site or possibly a few good knocks with a hammer. Less than inspired imo.
Rich people are pricks.
It'd be so tempting to fire in a few dozen pins right outside the front door, just to be an ass about it. "I say! Some cheeky bugger's put spikes in the path!"
Ramset powder guns. Take about 30 seconds. If one were so inclined.