Of course, glass is brittle and in most cases loves to break into sharp pieces, so people don’t love it for a lot of applications, particularly in packaging/shipping. When glass is involved, it generally demands more packaging to protect the glass from breaking.
Yes, depends on what’s the behavior of just sitting around outside, getting rained on a bit, sitting in a humid warehouse, exposed to bugs and rodents.
If hypothetically it only breaks down if shredded and mixed into compost, then it may be interesting. However in such a case you’d likely struggle to reliably identify and segregate it from the rest of the plastic waste stream to apply this special treatment without putting bad plastic into the mix.