Although I would agree that most row boats are less tippy than most canoes I don't think that it is a blanket statement. Went my son did aquanaut he skipped that because we don't have access to a row boat.
Personally I think that a sit on top kayak, is a better vessel to learn boating and rowing saftey. it is as stable if not more stable than a rowing vessels, I think that it is more intuative to paddle, the fact that you are typically facing forward makes it easier. If you go over board self rescue is much easier. Since they are self bailing you really can't sink them unless you cut a hole in it. I think that the BSA lumps sit on top and sit inside kayaks together the sit inside are tyically not as stable and self rescue is harder.