I doubt you can process glass cheaper than mixed aggregate dug from the ground. Your local waste company is not going to do it so that is one more truck and one more plant that crushes and grades it. You still end up with an inferior aggregate.
The segment NBC is carrying says that exact thing. If you are recycling wrong, you should just put it all in the trash. The problem is they originally sold this as ":recycle everything", when the reality is only a few things can really be recycled in any economically sensible way. Our waste/recycle company says they look at the load that gets tipped and in more than half of the cases, they just push it over into the trash pile with a Bobcat because it is too dirty. They have a showcase recycling operation for the news but it is a small fraction of what they actually collect. We burn a bunch of "recycle" in the waste to energy plant. It is no accident that they are right next to each other.