Even if it was true... none of these programs are aimed at making serious reductions in fare evading by homeless/mentally ill nuts. They'll just go to a different entrance, or get a ticket they won't pay, or worst case scenario a brief trip to get their id verified at the station if they're not carrying one, and will go straight back to fare evading because they don't care and there's never a high enough coverage rate except a few entrances to a few stations in tourist heavy areas to make getting caught something frequent enough to be a deterrent for them.