I do think worrying about radioactive waste given how much carbon dioxide we have dumped into the atmosphere is a bit like bandaging a stubbed toe on an amputated leg.
Carbon dioxide is certainly a concern, but most of its problems will never produce a place that people shouldn't stumble or explore because of unseeable danger.
I often think of the story of the Goiânia accident to be applicable. Four people ended up dead because two people stole something they thought might have value but was radioactive.[1]
It is prudent to assume that dangerous waste should be disposed of in a way that assumes there won't always be guards.
Actually it has value to our civilization, because much of the low-grade uranium "waste" could be put into breeder reactors and turned into plutonium - and reused as nuclear fuel.
Read about it here: https://www.withouthotair.com/c24/page_163.shtml
(edit: made it more clear what I meant)
I think it's possible that a similar effect would happen with attempting the same thing to the knowledge of nuclear fission...
It both serves as a very valuable source of rare energy and at the same time gets rid of the "waste" of old redundant processes, what's not to like ?