Fair enough to say that however the latrobe valleys generators rehabilitation funds are all reported to be "underwhelming" .The cost of decommissioning a nuclear power plant is factored into the cost of construction, in accordance with the US Nuclear Regulatory Commission a trust fund is established with the construction of the plant that is there for the decommission of the plant, that fund is not under direct administrative control of the operating company so they can't drain the fund and the money is there even if they go arse over ****. They periodically re-evaluate the cost of decommissioning and make sure there are sufficient funds in the trust fund, that excess they may have to pay from time to time is factored in the operating cost of the facility.
USA has decommissioned 10 reactors over the years, and have 18 more that are in the process of being decommissioned.
They have more info here: https://nei.org/resources/fact-sheets/decommissioning-nuclear-power-plants
"Under NRC regulations, licensees are required to submit their decommissioning funding estimates to the NRC every two years during operation. The NRC staff reviews the estimates and reports to the commission on the status of funding. Licensees have set aside nearly $53 billion for decommissioning, a 15 percent increase from the previous reporting cycle two years earlier. All but three reactors had enough money set aside to cover their estimated costs, and these three resolved their shortfalls shortly after submitting their reports."
USA has 104 nuclear reactors in operation. American standards have been quite high since the early days of nuclear power. I think if we were to go down that path there is a lot we can learn from other countries, we wouldn't need to repeat the same mistakes.