[Kon5ole]

>If storage is solved, then I think we would've heard about it.

Here's one of many many ways how the storage problem has been solved: https://www.siemens-energy.com/global/en/home/products-servi...

>Who is using this as a reason to not do the other thing?

It's not stated directly of course but if you look at the money there is a discrepancy. The largest battery storage facility in Europe cost about 90 million euros, while the EU has granted over 5000 million to the ITER Tokamak project.

So, clearly one thing is being done at a much larger scale than the other thing, deliberately or not.