The way I take Rockwell's site is that he'll almost always advocate for the most practical, common-sense, and low-cost approach. This is valuable for novices (like me) who can easily get caught up in tech specs and minutiae in the quest to take better pictures. It is a useful reality check to have an experienced voice say "Don't worry about that, all you really need is this." He's definitely saved me some money and helped me to identify some lower cost lens options, which has been great.
He's also a heavily opinionated writer who is prone to extreme points of view, and often seems deliberately provocative, as if he enjoys pushing the buttons of people who like delving into the nitty gritty details. I think as long as you can filter out the bravado, there are some broad points that make a lot of sense.
And hey, the guy must be doing something right, given how many threads I see with his name mentioned! Love him or hate him, people spend a lot of time talking about him.