So... breeder reactors. Expensive. Perhaps not so expensive? Doubtful, or even the Chinese would be doing it. If we were to count breeder reactors into all the processing of all the nuke waste in America, it would still be very expensive, wherein natural gas and coal end up being cheaper.
You need to take into account the cost of doing nothing about nuclear waste or the idiotic idea of storing it for thousands of years. - https://earth.stanford.edu/news/steep-costs-nuclear-waste-us#gs.p34hpj
And molten salt reactors are not overly expensive - https://www.thmsr.com/en/costs/
Funny you should mention China - https://www.globalconstructionreview.com/china-unveil-worlds-first-waterless-molten-salt-re/ and
It’s gaining traction globally - https://www.nextbigfuture.com/2016/11/17-countries-cooperating-on-molten-salt.html
India is a believer - https://southasianvoices.org/indias-venture-into-molten-salt-reactors/
Not bad considering the emotional baggage fission at large carries from the completely asinine light water reactor failures. GE Hitachi and Westinghouse soiled the cradle beyond belief.