1) i don't have a clue how good he is at typing because there's no way to prove his conclusions. that said, he should have the same right to give his opinion on what other's types are, in the appropriate areas, just the same as everyone else does. it's not like if he's wrong, it suddenly becomes true. to argue with him about it just gives his opinion, and that is all it is, more worth than it should garner.
2) my only real problem with him is that he backs down from arguments with, "i could blahblahblah, but i won't".