If that is correct, then I'd Do you fly on airplanes? Have you compared the risks of flying in 1967 and the risks of flying today?
If this transitory period has the ability to create substances that will potentially cause bother to generations living in thousands of years time, I think that's a problem.
Quite simply there are alternatives.
There's no such thing as truly clean power. Even renewables have huge environmental consequences. Hydro floods huge areas of land[1]. Renewables and batteries require huge sums of metals to be mined[2]. Solar and wind also take up huge sums of land that could otherwise be left alone. Everything has trades offs, there's no reason nuclear cant be one more tool in the tool shed.
[1]: https://www.theguardian.com/world/2016/aug/09/canada-site-c-...
[2]: https://www.visualcapitalist.com/electric-vehicles-drive-up-...
Yet