Being wealthy is not stealing, nor is acquiring wealth. Stealing is stealing, and earning is earning. Confusing the two is what leads the author of this article (and people such as yourself) to make morally idiotic statements.
Neither is stealing by a poor man more justified than stealing by a rich one: stealing is stealing, and the mitigating circumstances for the crime (or the sin) are moral and not material and may, or may not, depend on one's wealth.