Was, I'm retired. None good. SMRs were "flying cars" in the 90s, but the issue isn't the technology so much but the mindset of "factory" "startups" without grasping the rigorous process and security protocols of operations and sustainment. It's simply not scalable to have tiny nor supposed underground sites because the fixed costs of doing the minimum to secure and maintain them are large when done properly. Having a lot of SMRs on a single site would be fine, but I'm totally against unmanned SMRs in residential areas or running around on flatbed trucks not used by the military for emergencies. SMR manufacturers not backed by a major existing vendor like Mitsubishi, Hitachi, Westinghouse, or GE is also a risk because 90% of startups fail, and then it will be made the taxpayers' problem to clean up their messes. I'm betting that one or more SMR startups will skip insurance and/or licensure, or that techbro third-world country-style political intervention will do it for them and put the public at risk because DOGE will "decide" the NRC is "fraud, waste, and abuse".

If you want to read about the history of the nuclear industry, read 978-0894485732 / https://search.worldcat.org/title/84903757