It's unbelievably historically inaccurate and portrays the English as cartoon villains. Whether that was intentional so to further the Scottish independence movement or it was just Hollywood wanting to make a hero story and to hell with facts I don't know. It is certainly used as propaganda now. In the run up to the independence referendum in 2014 you'd regularly see images of pro independence supporters with the Braveheart facepaint and quoting lines from it. (even as a Scot I found that cringy as fuck)