> I think the standard response is “but what about a hypothetical future civilization somehow disconnected enough from ours to not know what nuclear waste is who find it and dig it up thinking it’s holy or whatever”
It is not. Why is it one straw man after another in this discussion?
The response is that countries like Germany have already spent a lot of time looking for a suitable place, and haven't found one. At this point it seems likely there isn't one.
If a place is found, by all means, go build nuclear reactors. But sort the waste problem out first. We've already done the "build first, figure the waste problem out later". Many decades later, here we are.