IMO fission is already plenty for our current/near-term energy needs.

We should definitely continue the pace on fusion but it's not strictly necessary. We should prioritize deploying proven technology ASAP.

There will be no civil fusion power, as it would cost >10x as much as fission, and fission is not now competitive, and gets less so with each passing day.

Each dollar diverted to fusion or fission from build-out of wind and solar brings climate catastrophe nearer.