They did not answer it. "Broaden the scope too much" - why? The question seems completely appropriate if you're actually trying to solve the climate problem. The response didn't address this, it targets crypto specifically, which makes it seem like the motivations are not climate but something else.

The question was about how to choose who is using too much and how, and the response was basically "don't think about it, we will exist in the future and can think about it then." But we exist now. And even if we were to wait, it's still a question we can answer now to have enacted later. The response provided was a bypass, a non-answer.