That is the definition....., they're used a single time and dumped into the environment. That's what single use plastics are, I've legit never heard of anyone aside from you refer to glass as single use.

They say glass new and recycled but accept that a large amount of glass bottles still end up in the ecosystem.

I didn't say it defined single use glass, that's just a you thing. It defines sickle use for the article in which it is used solely to describe items that are used once and dumped into the ecosystem. It is specifically never referred to in reference to glass in the article.