Well if you put it that way the tutorial doesn't end until you're just about at the end of the game. I never really understood why still having new things introduced late in the game was considered a bad thing. It keeps things fresh
There is a difference between having things introduced throughout the game and having everything handed to you over the course of several hours. I would have had no problem with having small things introduced to me as the game carried on but Final Fantasy XIII offered absolutely no choices in the matter. I haven't beaten it yet (partly because I can only handle 1 or 2 hours at a time) but I hope it opens up at least a little bit.