This is such a silly argument. Battery and solar technologies are progressing regardless of people building nuclear. It's simply not the case that we can stop investing in nuclear and use that money to accelerate battery/solar.

The best energy strategies are all-of-the-above.

> For the cost of the R&D of one next generation nuclear reactor design, how many next generation battery and solar panels technologies can you develop

This is a horrible argument. Yeah, let’s not spend money improving technology. We wouldn’t have increased Solar panel efficiency if we followed such ill advice.