As I noted earlier, I believe we have a homeless problem because of the growing inequalities of wealth and incomes, which is well documented.  I did not say that we have regressive taxation, or that taxation was a cause of homelessness.  My statement was about my belief that progressive taxation might be one political outcome of some future shared belief that we should lessen the disparities of wealth and income. 

Taxation can be more or less progressive, more or less regressive, so your attempt to make it an absolute is either sophistry or a misunderstanding on your part.

Have you volunteered yet to help with the homeless count?  @Curtis Kropar thinks it might open your eyes.