Or, humility. Nothing is certain in civic planning. But I suspect you'd jump on me if I claimed it was a foolproof plan, wouldn't you? But it's observed all over the world: in places where housing is affordable and available, there isn't a homelessness crisis. Most homeless people don't wanna be. Remove them, and the community goes away, and with it, all but a very few diehards that exist in practically every city.
Really? Name some of your ideal cities. We'll check and see what their policies are for sleeping on the streets.
So if they do force people to move on, despite this "affordable and available" housing, that pretty well destroys your argument, doesn't it? Because all compulsion is bad, as you said.
"There may be a path forward" -- weasel words.