Solar farms are definitely much, much simpler .. thousands or even millions of perfectly uniform panels manufactured in a factory, some wiring and power electronics and some electrical infrastructure to connect to the grid. Projects are delivered in months, and almost all within 1% of project budget.
Nuclear power plants consist of probably tens of thousands of different components: a reactor (containing a reactor core, fuel rods, control rods, moderator, and coolant), a turbine, a generator, a containment building, a cooling system, pumps, valves, and piping, a control system, a safety system, and a waste disposal system, along with all the same electrical infrastructure to connect to the grid. Projects take years to decades and invariably delivered multiples over budget.
The downside of nuclear is that more could go wrong when building, while deploying solar panels doesn't have any risks and the permission (if any) is easy to get.
Fabbing hundreds of thousands of hectares of semiconductor is going to be far from risk-free or environmentally benign.
Also, residential solar installations have killed and injured many more people than nuclear power plants ever have. It turns out that climbing on roofs is dangerous.
Not at all the same nuclear.