The problem is the number of homeless people, who number enough to start their own city and get a zip code.
They “Have rights” you can’t imagine and this is about the politest way of dealing with them.
Thing is they aren’t stupid and they’ll quickly learn to stand perpendicular the any phobic object and nothing will change...
Exactly. And how much money will all this "hydrophobic paint" cost the city?
Only San Francisco would think this is a worthwhile expenditure.