In addition, this article smacks of someone who perhaps, despite his allegations otherwise, really cannot afford to buy a home he would like, so he is therefore constructing an argument in favor of lifetime renting. Regardless, his poor math and his omission of the power of leverage completely undercut any credibility.
Excellent point by sduuude as well. Furthermore, with focus and determination it is very possible to pay off that mortgage in well less than 30 years.