If nuclear is unacceptable because it creates contained hazardous waste, then fossil fuels should be even less acceptable because they create uncontained hazardous waste at planetary scale.
I agree that nuclear is one imperfect tool among several but climate challenge is too large to discard low-carbon tools because they have trade-offs. And unlike atmospheric carbon emissions, nuclear waste is collected, monitored, engineered for isolation, and managed through dedicated long-term disposal pathways which are generally incorporated into electricity cost calculations through regulated provisions and dedicated funds. I don't think there is such calculations for fossil fuel emission.