Oh fuck off with the mindless cynicism.
The amount of plastic used in those glasses, which is only in the lenses as the rest is card paper, is a fraction of what's in typical disposable consumer goods. I guarantee you've already thrown out more plastic in the last week than is in a whole ten pack of those glasses.
Meanwhile, events like this are a great way to remind people of the natural world we live in and how miniscule our experience of it is relative to the enormity of even just our solar system.
As opposed to your world changing contributions of bitching online to random strangers?
Keep fighting the good fight. I'm sure you're just one more post away from saving the planet.