I have no major problems with the article. Overall, if marketers followed the advice contained therein, most experienced email users would have few complaints. Just a couple of things ...
"I love targeted email". Well, not everybody shares your enthusiasm. I have never received any unsolicited "targeted" email that would ever entice me to buy anything. Please keep that in mind.
"Purchase opt-in lists". Pardon me, but there's a problem of definition here. Depends on what the consumer "opted in" for.
On the one hand, I might tell a web site owner, "Sure, go ahead and tell your friends that they can send me information, about anything that they think I'd be interested in."
On the other hand, I might "opt-in" to receive a newsletter, and maybe the list owner didn't tell me that they were going to give the list to anybody else.
If you buy and use an "opt-in" list to send me email in the former instance, then there's no problem.
If you buy an "opt-in" list in the latter instance, then your email to me is spam, and you and the list owner are scum.
Please clarify what you mean by "opt-in".