Crazy how in the 60s reactors were build by small teams with low millions and today you need an army of people and 30 billion.

Nothing about a nuclear reactor in inherently expensive. The reason current PWR style reactors are expensive is because they require a gigantic civil engineering project, long term financing and very expensive costume steam turbines and costume reactor vessels.

We could live in world where conventional turbines from natural gas plants are used, a team of only a few people manage like 10 reactors at the same time and the capital build cost of the plant is less then that of a gas plant.

There is nothing based on first principle that prevents this. Sadly nuclear technology fell so out of favor, and at the same time the regulatory agency basically made progress on non PWR impossible that we are decades behind where we should be.

Thankfully Canada has realized this and has adopted a new framework for nuclear regulation. In the US FINALLY the DoE has admitted that their regulatory framework makes no sense and they are attempting to slowly change it as well.

The people who think climate change is important enough to not allow more coal, gas and oil to be burned.

If people can do so more cheaply through other means they should naturally do that first, through the common results of closing nuclear plants has always been an increase use of gas, oil and/or coal.