Just yesterday my state (in Central EU) has incorporated a company that is going to deploy several SMRs here. One of the US ones got certified just few months ago (they are buying that one too) and we also have our local designs ready to certify and then build - this country is extremely pro-nuclear (over 80% support) and has significant nuclear engineering industry and world-class nuclear regulation authority. I really don't think you're right it's not happening.

And talking about nuclear in general, we are building several standard big reactors too (expanding older power plants), with no sign of insurmountable problems - ever since we stopped letting the greens affect the projects with their FUD and fake "studies" it's going more than well enough, unfortunately they backtracked us for a decade before we were able to change the law otherwise we would have the new reactors running today (the local Green party went from 30% to literally 0 over this, lol).