There aren't really any opposites here. I never disputed that Prime could be beneficial in reducing the toxins in the tank. I disputed that water changes would lengthen the time needed for bacterial populations to reach a balance with the ammonia produced by a tank.
However, there are a great number of myths in this hobby--practices that are recommended without any understanding of the science behind the hobby (and no, I'm not implying that anyone posting in this thread is guilty of this, this is a general statement that does apply to advice given out in many books, many, many LFS, and other sources including websites). A lot of these are based on what people see as working, despite the lack of correlations or adeqaute support to state something definitively. For example--you'll hear from many people that you should add salt to your tank. Minute quantities, inadequate to actually act as a preventative, but higher than natural levels in fresh water stream and lakes. There's no logical explanation for this, and no reason to suspect that the fish need this additional salt in tanks without needing it in the wild. I think it's very important to identify and eliminate these myths from our hobby, since they do cause so much confusion for new hobbyists. So--my best advice--if you question why you're being told something--ask! Research and see what makes sense to you. If it's not based in science, consider the possibility that you're being told a myth.