Hehe. Certainly reminds me of one of my ISTJ Chemistry teachers and some physics teacher.
"Right. What you learnt the last few years is completely wrong. It's just an extremely simplified version of things. Here's the new wrong theory!"
I don't think it's reasonable to blame SJs for the whole structureness and lesson plan issue. It's the education system itself that is extremely geared towards J structure and unneccessary paperwork blah blah blah. When teachers have to meet targets constantly, it's no wonder most end up becoming cynical, hoping to just push students through the system when their original thought was to teach. Think about it...
Teachers don't go into the career thinking: I'm going to be a drill sargent. Almost all want to be inspiring to children but it's difficult to do so when there's a whole load of stuff going on. It changes at college because there's more freedom to do what you want but still there's a large amount of structure involved behind the assessments and all that. Course this is just talking from a non-teaching perspective. It'd be more useful to get information from someone actually in the education system and what they think of it. Recoleta for example.