To those whose lives have been irreparably harmed by the violent mentally ill people inhabiting SF's streets and parks while the police stand idle and billions of their tax dollars are spent annually failing to solve the problem-- it might hit a bit differently. That isn't the story here, but when you see people taking it differently than you it isn't necessarily because are in any way lacking in compassion.
The article paints the person in question as a harmless Garden Hermit ( https://en.wikipedia.org/wiki/Garden_hermit ), perhaps he is but many of the support-resistant homeless are certainly not harmless.