The only time I've met Zed I found him to be a perfectly pleasant and non-cantankerous person.
My understanding of his approach to teaching is that it's based getting people to do things that bring results and then getting them to understand why after - which I think is a perfectly sensible one for beginners
It is very good. There's an educational philosophy around this that state that people who are new need to know "why should I care" first, then "how do I do it" next, followed by "ok, why does it work that way?" last.
When you're cooking, you follow a recipe. When you are learning to be a cook, you graduate to figuring out why you do it the way the recipe did.
And when you get really good, you start saying things like "Well, I wouldn't teach people to cook THAT way! That's wrong!"
My understanding of his approach to teaching is that it's based getting people to do things that bring results and then getting them to understand why after - which I think is a perfectly sensible one for beginners