A friend used to work in a student bar as a bartender. Broken glass was legitimately a safety issue. Drunken people can cut themselves quite creatively, including severed sinews.
Ironically, most of his patrons were medical students.
I don't think it is "clutching at straws" for a bar to want glasses that break less frequently, causing fewer safety concerns, and to be prepared to pay the extra, but whatever.
Ironically, most of his patrons were medical students.