>>961163The point of having good urban planning is quality of life. Accessibility is a part of quality of life. Accessibility means accepting that anyone who chooses to move around the city can do so.
99.9% of the people you see on the metro systems of major cities are employed, normal, decent people from all social classes. The 0.1% who play boom boxes or throw up or whatever are a fact of life, like the crazy drivers who road rage and follow strangers after some perceived slight on the highway.
Your reasoning seems to be that urban planners, instead of working on making cities liveable, should instead primarily focus on punishing poor people at any cost, even if it means making the city less liveable for its residents.
This is about as dumb as that politician in Florida who shut down all the publicly funded TB clinics because all those freeloaders were leeching off the taxpayers. The leeching stopped, and hundreds of contagious TB patients were pushed out to spread their disease. Because fuck common sense, we need to show those poors that there's no free lunch!