Now, I'm Canadian so maybe take this with a grain of salt, but here's my two cents.
I disagree with most of what he says in that article. I think he's wrong about what the issue is. The arguments he dismisses (more stringent drug testing stateside and a lack of interest/youth involvement) I believe carry more weight than his assertion that the American weightlifting training programs are inferior to the conjugate system. In this sport, performance enhancing drugs can make an insane difference, and the attitude towards these substances is completely different. Here in North America, you are practically crucified if you are found to have "cheated" in this way, especially with the way steroids have been portrayed as evils of the highest order in the media. Athletes in other countries serve their suspension (training while juiced up all the while, I'm sure) and then come back and compete again.
Also, the lack of awareness about olympic lifting and funding for high level lifters results in almost nobody starting the sport at an early age. This is another issue he dismisses, but if you look at other nations who are very successful in olympic weightlifting (China, Russia, etc) they start training the o-lifts at a young age. Over here we're lucky to have someone who knows what a snatch or a jerk is, let alone a place to lift proper and a coach who actually knows technique. Not to mention all the best athletes get snapped up by other sports (football, basketball, baseball, hockey, even wrestling).
I also don't agree with what he's saying about the relative merits of strength and technique in olympic lifting. This sport is as much technical as it is strength based. Are there other countries out there with elite athletes winning medals who don't do the lifts all the time, but rather do other strength work and more specialized exercises to work on their weaknesses? I'm sure there are, but these athletes have also been training the lifts since they were small children and have the movements ingrained into their nervous system. Very few athletes in north america start at such an early age, and thus do not have that technique imprinted into their muscles, and so they need to keep working on it. Are there coaches out there who swing the pendulum too far towards technique and have athletes who are weak as shit? Absolutely, but I don't think those guys are coaching olympic hopefuls.
This is already getting too long so I'll just say one last thing. He mentions Americans winning powerlifting world championships, but I checked world champions in the IPF (too lazy to go through all the feds) and found that an American male (didn't check the women, sorry ladies, time constraints :P) hasn't won an IPF world championship since '08, and there has been a distinct decline in American powerlifting champions over the history of the IPF. Maybe puts another hole in his argument.