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Are you able to link the source document?
However, as an example of why nuclear is seen as risky, time-consuming and subject to massive cost blowout and time delays, see Flamanville 3 ( https://www.world-nuclear.org/information-library/country-profiles/countries-a-f/france.aspx Under “new nuclear capacity”)
It’s gone from being a project started in 2004 to build a 1650MWe plant costing 4.2 billion euros (in 2020 euros), to an estimated completion date of 2024, at 13.2 billion euros.
And this is France, a country that is very familiar and well-versed with building nuclear reactors.
Without the source document, this may well be the example you use from your 2nd bullet point. But I wouldn’t have called this a startup.
It’s not Australian construction, it would seem to to be a Western country issue, or one potentially affecting any nuclear construction.
See Flamanville 3 ( https://www.world-nuclear.org/information-library/country-profiles/countries-a-f/france.aspx Under “new nuclear capacity”). It was started in 2007, and was estimated to be completed in 2012, but it’s still not completed. It’s currently scheduled to begin operating in 2024.
Oma powerplant in Japan was started in 2010, and is currently scheduled to be completed in 2026. https://en.m.wikipedia.org/wiki/Ōma_Nuclear_Power_Plant
South Korea’s new Hanul reactors look like they’ve taken about 10 years each. https://en.m.wikipedia.org/wiki/Hanul_Nuclear_Power_Plant (The table in section “Reactors” might be interesting, as it shows the pre-2000 reactors taking only about 5 years to complete)