The important thing is, they’re using SMRs.
Megaprojects can go off the rails of time/budget because people try to make them special, bespoke, unique.
“Nothing like this has ever been done before!” When really, you want your project to be like lego: Lots of standard parts (or at least, mass-produced for your project) that connect together to make a larger whole.
SMRs mean more common parts, and more modular building. Build the first, build the second faster, learn from mistakes, etc.