"salespeople" have been replaced by "customer reviews". The quality of the information is better because the motivation is no longer "get you to spend as much as possible", but "help others find the products they need, and rely on others to help me find the product I need".
Much of the wrongness of the article is in this same vein. He gave a series of reasons why things didn't exactly, perfectly translate, but failed to recognize how new technologies and new communities would arise to fill in the gaps and improve the user experience. He saw the problems and assumed they wouldn't be fixed, while tech pioneers saw the problems and found ways to fix them (often using technology that was already being demo'd in 1995.)