Your other argument about cheap labor is completely ignoring principle 3. above. Saying cheap labor for an industry is _inherently_ good is basically saying we should go back to the dark ages. This is probably the only principle both capitalists and socialists agree on (at least our 21st century brand of socialists that hope for a UBI utopia)!
Anti-nuclear has almost taken on a religious fervor that I don't understand. Safety is a property of an implementation, not a fundamental law of nature. Please! We're arguing for the same ultimate goal!
It has not been demonstrated that the diseconomy of scale in SMRs is actually tolerable. The experience at NuScale is not providing much comfort there.
Of course the lower demand for skilled labor is good. "Civilization advances by increasing the number of things that can be done without thinking about them." The simpler the task, the less training is required, and the faster workers can be brought up to speed. The high skills needed for nuclear work are one of the reasons nuclear builds are in trouble.
(You might object to that if you are a skilled laborer feeding off this trough. Well, too bad, the purpose of energy isn't to employ you. You are a cost, not a goal.)
Nuclear has taken on an religious fervor that's not based anywhere in reality. Nuclear is demonstrably a failure, yet the proponents are blinded by their dogma.
1. Less raw material: this has a huge impact on society as a whole. Solar panels and wind turbines require a lot of raw materials that must be mined, refined, transported and built on site. Nuclear requires these things too of course, but it is more energy dense - requiring less given similar levels of technological innovation.
2. Less space: I've seen solar panels go up in various institutions around where I live. They're awesome! But many times they replace what once were fields, forests or pasture land. Wind turbines are even worse, always altering the natural landscape. Do _not_ get me wrong - I fully support these renewables, but once again they are not as space efficient as nuclear at scale.
3. Less workers: purely an economic efficiency principle. At scale density matters with respect to cost effectiveness. Given the same innovation and investment as renewables, nuclear can bottom out in a cost effective way that could really reshape our current energy landscape. Renewables have a much higher threshold requiring a higher percentage of our overall economic output to be dedicated to them. This means many other initiatives (like - for example - many other innovations sorely needed to mitigate carbon emissions) simply won't have resources because our society has taken those resources up building less efficient renewables.