> This isn't necessarily bad, and there are plenty of innocuous unpleasant designs: doors with locks, fences, car alarms, even those faucets in airport bathrooms you have to keep pushing to keep them from turning off. Sometimes you need to make something less friendly in order to prevent certain unwanted uses.

I think the key difference here is that these things prevent burglary, trespassing, grand theft, and thousands of gallons of wasted water. The Camden bench just makes it so you don't have to see a homeless person. There's something distinctly dehumanizing about that, moreso than door locks.