The 07/08 financial crisis didn't seem to negatively affect states like Mississippi, Louisiana, Alabama, Virginia, North Dakota, and Iowa which have the lowest per capita homeless rates. These states have alternated Governor party rule in the past 3 decades or so. Meanwhile, DC, New York, California, and Oregon have the highest per capita homeless rates and all but California have been true Blue Dem in Governor elections for three or so decades.
If Dems can't fix city level issues and / or state level issues of job availability, drug programs that work, effective law enforcement, and overseeing a housing market that meets the needs of the population at a state or city level why would anyone think the party as a whole has solutions to greater problems?
I'm not a Republican. I think Bill Clinton did some good things. I also realize Dem and Republican led Congress were at play during his tenure. This quoted article from the OP doesn't tell the whole story and living near Democrat controlled cities has shown me that single parties are never the answer. I'm within driving distance of DC and pass Baltimore every time I visit family in PA.