This doesn't mean "we don't have unsafe storage solutions".
He says while we carbon swaths of our planet out of habitability at current technological/economic levels because the available solutions are good and not perfect.
Surely you see the irony.
If the world had continued to adopt nuclear power unabated, it is likely that climate change would not be a problem, and millions of cases of cancer not occurred.
This is not to say it is now time to adopt nuclear carte blanche, but to demonstrate that your way of thinking is not without issue either.
Or better yet, reuse.
You're characterising it wrong. Epidemiologists estimate the days of lost life across a population due to environmental exposures.
If you add all those up they aren't equivalent to number of lives lost.
But hardly an argument for how safe nuclear energy can be. You wouldn't judge the safety of aviation based on the Wright brothers plane.
Also note that one of the problems on that mine is not only the radioactive waste, but also mercury, lead, arsenic, and other product not coming from nuclear facilities. That kind of waste is dangerous for basically ever compared to the radioactive atoms. Yet nobody talk about it.
Nuclear energy is not the only industry producing nuclear waste. You've got also significant radioactive waste produced by the medical, research, defence, mining, and other industries. And so we need safe waste storage regardless of the existence of nuclear power plants.