I'm not proposing diverting money from renewable build-out. But surely we can
also build a few conventional plants for nuclear base load for all the additional heating, industrial, etc, demand we'll have as things electrify... and try a prototype design or two to gain information.
It's not like there's one purely fungible pool of resources to build all things and solve all human problems.
Diversity in approaches is way better than your all-eggs-in-one-basket strategy.