The audio announcements are also for people who can't see the screens, due to blindness or just people in the way. They're typically repeated so you don't miss what was said. It's potentially annoying for frequent riders but most people just wear headphones if they know where they're getting off.
The homelessness thing is a much bigger problem. Shelters are always full, and even if you do have a job, rent is totally out of control, and the wait for section 8 housing is >a decade in some places. It's not surprising that people end up on the streets, and yet rich people in this country want to further cut back on social safety nets while offering ever more subsidy to the wealthy. https://mobile.nytimes.com/2017/05/09/magazine/how-homeowner... discuses this.
The homelessness thing is a much bigger problem. Shelters are always full, and even if you do have a job, rent is totally out of control, and the wait for section 8 housing is >a decade in some places. It's not surprising that people end up on the streets, and yet rich people in this country want to further cut back on social safety nets while offering ever more subsidy to the wealthy. https://mobile.nytimes.com/2017/05/09/magazine/how-homeowner... discuses this.