To me, it's not even about that. It's about one person feeling they have the right to carry on as a noisy nuisance in that environment, to the detriment of eve

To me, it's not even about that. It's about one person feeling they have the right to carry on as a noisy nuisance in that environment, to the detriment of everyone else's experience. If the person's activity was silent, making the only social breach ignoring the instructor, I'd be much less likely to consider that a problem in need of addressing.