Michael Rosen loves grammar

This isn't a post, just a link. It's a post by someone who criticises Michael Rosen. I won't have this. Michael Rosen tirelessly defends good language teaching. This person says he is down on grammar, when grammar is important. But he isn't - he gives every impression of finding it fascinating, and is admirably intelligent and well-informed on modern linguistic thinking. He just thinks the SPaG test for children is stupid (which it is). It also seems that the post's author regards grammar as a set of terminology that help you to write well, whereas Rosen appears to see grammar as something interesting and exciting in its own right (which it is). Anyway, here's the post and below it you can read Rosen responding at length.