Because although it was an extremely significant technical achievement, we're still probably a couple of decades from hooking a fusion plant up to the grid. And

Because although it was an extremely significant technical achievement, we're still probably a couple of decades from hooking a fusion plant up to the grid. And depending on how the economic incentives go, there's a decent chance we'll never hook one up. In terms of practical benefit to eg carbon neutral electrical generation, it has no immediate impact and the long term impact is still very difficult to handicap.