Again, this is redirection. Mentally ill people squatting in tents is not a problem everywhere, only in places where nothing was done to replace the asylums, and where people were just abandoned in the streets. Better social programs were created in most places, like supervised housing, regular social worker visits, "Housing First", etc. Putting people in what is in many ways worse than a prison, for the "crime" of suffering a mental illness, was not right, and most developed countries actually chose to improve the existing system instead of just "throwing the baby with bathwater". If the place where you live is full of mentally ill people living in the streets, the solution is not to return to the system that existed before, but to create a better system to replace it.