No one because it's a random offhand comment that will be forgotten. Bitcoin mining would obviously transition to use renewables (it mostly does as it is, cheap hydro is what most large scale operations are using), and no one will care.

Why don't we see articles like this for more important bigger problems like plastic waste that won't be solved by renewable energy? Because making random claims about bitcoin STILL somehow gets clicks. And to the top of HN.

Can you expand on this? What makes you sure these predictions won't come true?