Scaling nuclear power supplies to 100% of global primary energy would change the economics of extraction, do you claim you can predict these things? BTW, scaling it to 100 % is not necessary.
AFAIK, THTR-300 is only one of the different breeder models, CEFR from China <https://en.wikipedia.org/wiki/China_Experimental_Fast_Reacto...> seems to be working, as a new model <https://en.wikipedia.org/wiki/CFR-600> is being built since 2020, sure, recycling uranium is not needed at the moment, so you could argue this is not demonstrating the interest of breeding though it seems to be working to a certain extent.
AFAIK, THTR-300 is only one of the different breeder models, CEFR from China <https://en.wikipedia.org/wiki/China_Experimental_Fast_Reacto...> seems to be working, as a new model <https://en.wikipedia.org/wiki/CFR-600> is being built since 2020, sure, recycling uranium is not needed at the moment, so you could argue this is not demonstrating the interest of breeding though it seems to be working to a certain extent.