Any standard that wastes valuable space in the first line of the commit is a hard sell. I don't see the point in including fix/feat/feat! just for the sake of "easy" semantic versioning because generally you know if the next release is going to be major or minor and patches are generally only only after specific bugs. Scanning the commits like this also puts way too much trust in people writing good commit messages which nobody ever seems to do.
Also, I fucking hate standards that use generic names like this. It's like they're declaring themselves the correct choice. Like "git flow".