Farrell and people who think like him do not deal with any of those causes. The only suggestion we find in his book for alleviating the problem of lack of shelter is to bring the level of help for homeless males up to that provided to homeless females. Not much of a solution. Oh, yes, he does personally go out and give homeless men food and blankets. The latter is a worthy thing to do, but it's a little like putting a bandaid on a huge infected open wound.
Homelessness is just one of many problems the nation has today.
Warren Farrell discusses some of them in his book. But the reader looking for solutions would be well advised to look elsewhere. He skips over the fact that one in four American children live in poverty. His only child-related concern is for their fathers. This is the extent of his concern for kids.