The most obvious problem with their comment is the dismissive, holier-than-thou tone.

They could have made their point by suggesting non-disposable alternatives: finding a local viewing party with shared equipment, preferring reusable glasses, or safe alternative ways of viewing like pinhole cameras or projection techniques.

But no. It's much easier to sneer on an anonymous forum while stoking that sense of superiority instead of actually offering something constructive.

It would be nice to get to a doughnut economy where we can build a strong social foundation within the ecological boundaries of the planet, but of all things, worrying about recyclable, reusable, and rarely consumed eclipse glasses shouldn’t be our first priority

Their points aren't valid, though. The glasses are predominantly paper, and they're reusable. And the eclipse is a significant natural and cultural event that is also dangerous.

Their argument boils down to "buying anything is bad", and that is an empty, cynical stance that is fueled entirely by smug self-satisfaction, not concern for the environment.

They can do more to help by unplugging their shit and reducing the global electrical usage.