Nuclear has been artificially made way more expensive than it should be.

For one part, why is it the only energy source that has to take care of its waste? (LCOE includes this cost, and I'm not saying they shouldn't, I'm saying other sources should too.) Coal can spew waste out (including radioactive waste) and they don't have to handle it. Wind just throws out blades and doesn't have to deal with them. Etc.

The insane strictness on designs and safety are also far higher than they should be. A lot of its based on a linear no threshold model of radiation safety, which has been disproven., which dramatically increases costs.

Even still, LCOE for nuclear is pretty competitive in the US, and the US is one of the worst places for nuclear, as our dirty energy companies have easily been able to purchase laws to increase the cost of nuclear, so they can't compete as much. Sort this by LCOE and see how many cheap nuclear is for most nations.