I don't think it's difficult!
• The people who want security get to keep all the security they get today.
• The people who don't think about security and leave default settings intact keep all the security they get today.
• The people who explicitly ask for less security get less security.
• Some of the homeless will get increased access to vital services.
It's a win-win—unless you believe, for some reason, that people should have security forced on them even if they explicitly ask to not have it. I fundamentally don't understand this mindset. People should have the right to do dangerous things if they are warned of the risks involved.