A little, but at the same time, some glass things are extremely durable and since it’s in a person, what could they do to break it that wouldn’t also hurt them significantly. ¯_(ツ)_/¯ Like glass marbles are pretty durable. Some can be chipped by being thrown against cement but they don’t create rediculous shards like windows or explode like tempered glass. Not to mention how easy they are to clean.

Definitely require a bit of inspection before use though :p