It's just rank incompetence, bad management, and three-party contracts where each party is preparing for failure and a gigantic lawsuit in the end.
Meanwhile, the latest excuse for the recent US failure in building was that they commenced building before design was complete, and if we just try again now that designs are complete, everything will proceed smoothly. Meanwhile others in this thread are complaining that the NRC requires complete plans before building.
Those who complain about imaginary regulations can neither state the regulations that slow things down, nor describe suitable regulations, nor apparently even agree on what the current regulations are.
I've been asking "which regulations" for years, nobody has ever, literally ever pointed me to which. They just have supreme confident that it's the answer, despite not knowing specifics.