In a nutshell, yes.

The argument is that small-scale nuclear reactors have been built for military and scientific applications so the tech is not especially novel.

What I think is unproven is whether SMRs can be built and run safely while being cost-effective to other forms of power.

I wouldn’t be surprised, for example, if it actually costs less to build and run one full-scale reactor than it does for multiple SMRs of the same output.

That doesn’t mean they won’t have a use.

Yeah, the issue isn't knowing how to build small reactors, it's whether you can do so with enough economy of scale and learning to make it cheaper than conventional nuclear.

And I personally have switched from bull to bear on that. I was rooting for NuScale but they're hitting the same thing as everyone else.

Meanwhile, battery storage has been on an insane cost reduction curve.