Really hard to take the article seriously when it crams so much misinformation into one paragraph. There is no such thing as "bumping you up into the next tax bracket." The marginal extra dollar might be taxed at a higher rate, but the dollars below that will be taxed the same as before.
Moreover, the fact that health insurance isn't taxed now can't explain the origin of the industry. Initially, health insurance was taxed just like any other non-cash benefit. A tax break on health insurance was implemented as a way to offer some relief from the wage controls of WWII: http://www.npr.org/sections/health-shots/2012/12/04/16643424.... But such a tax break wouldn't have come about if the industry didn't already exist.