In fact, deconstructing the 'disgust' opinion is very easily done. Just as the disgust can be deconstructed.
That erroneous 'opinion' does not alter the survey findings and the survey findings quoted aren't affected by, nor are they reliant on some of the other questions asked on the survey.
It’s also worth noting that Drum provides stats about mental illness and substance abuse rates for the homeless, but the statistic to back up his claim that they are potentially dangerous never appears.
He is attempting to rationalize the irrational and that means taking as many logical fallacies as possible out for a spin.
But so be it. If someone's refusal to assume all homeless people are dangerous and suffer from untreated illnesses, or to being disgusted by them for being sick means they are crazy, then to hell with Kevin Drum.