Earlier quoted context omitted.
But some people actually do prefer to rot on the street on their own terms, than rot in some asylum cell locked up. Still, I think other people have a right to walk the streets undisturbed, so I don't see an easy, clean solution solving everything at once. But banning public drug use, is very fine with me.
Of course some people prefer a to b. It doesn't automatically mean they are entitled to it. I could build myself a really cool James Bond-style tent house in Central Park and live there in the summers for basically free. I'd like that. I'm not entitled to it. Voters can easily decide that the sidewalk is no longer a place for people to rot on.
"I think other people have a right to walk the streets undisturbed"
And when you ban public drug use and enforce it, you automatically remove all junkies from public spaces.