Guy, who reads the article, makes mention of it in the EvangeList newsletter, and gives a URL for all to read. So far, so good. Guy is providing information. All fine and dandy, even though the article in question is an ill-informed mess, bordering on ignorance. The problem comes along after this stage.
Some users take it upon themselves to then send hate mail to the writer in question.
This, my fellow Mac users, is the problem. No, I do not think it is wrong to send e-mail to a writer whom you disagree with. In fact, as a writer myself, I get just such mail every now and then. But there is a fine line some letter writers are crossing that should be addressed. They simply see a posting in EvangeList that points out a negative Apple article.