Nuclear plant construction has the potential to become much less labor intensive if it moves to smaller, standardized nuclear reactors that can be manufactured in factories, using mass-production techniques.
>>Nuclear is going to be further negatively affected if there's a transition away from fossil fuels, since the industrial infrastructure for making steam turbines will no longer have as much support.
True. However this is a surmountable problem. It's just a matter of using subsidies to achieve economies of scale in nuclear plant construction.
The problem with the subsidy argument is there's no good experience to show that subsidies would do more here than just burn money. Nuclear has not had good experience effects. This is in sharp contrast to renewables and storage.
Nuclear is weighed down by the boat anchor of its historically poor performance.
Specific construction expertise for nuclear very likely has degraded (the US can no longer forge the large reactor vessels for PWRs, for example.)
Nuclear is going to be further negatively affected if there's a transition away from fossil fuels, since the industrial infrastructure for making steam turbines will no longer have as much support. Bespoke turbines from smaller makers will be more expensive.