The general basis of the article should be that Wordpress (or other blog platform) can be used as a CMS for a website, and that it is an alternative to a static site. However, implying that it can replace a designer/developer to represent the business in a professional manner, and it can be done for little to no cost, is way off the mark.

The article fails early when he compares a website to a word document or e-mail (more appropriate comparisons would be trade show booths, marketing brochures, and store layout/design), and all arguments he makes against a static site can also be made against the use of the weblog he promotes.