Stuck triple twists on beam are one thing if they’re actually fully rotated. They’re usually still a bit messy, but the inherent acrobatic ability it takes to get all three twists round generally cancels that out for me. Most of them aren’t though. Even in that video above, loads of them are short. I don’t think the same issue applies with salto dismounts, because if you can’t reliably get the rotations in there, you’re going to fall. There isn’t the same potential for cheated double doubles off beam. That’s not the sort of skill a gymnast will be throwing unless she has full mastery of it.