Maybe tautology is the wrong word.

I just feel like it's a bit ridiculous to downplay the environmental impacts of bitcoin mining by saying "it'll be fine when we have fusion!" because we don't have fusion today, and it's likely to be a very long time before fusion is commercially available.

Also, your initial comment said:

>By the way, the negative environmental impacts will be significantly reduced after ITER is ready.

ITER is not a commercial reactor. Even after it's construction is completed (expected to be, what, 2025?), we still have a long way to go before you can use fusion power to mine bitcoin.

Meanwhile, climate change is happening now. We need to be reducing emissions now.