My guniea pigs hide from predators by burying themselves in hay. It's fairly effective.

That's not what as Ostrich does. An Ostrich leaves itself exposed and just closes its eyes.

Mankinds attitude to all sorts of threats is an ostrich policy, but burying nuclear waste is not one of those. Leaving it in a barrel and saying "nothing to see here" would be.

If it doesn’t cause any problems when it’s underground then that’s just called solving the problem

Yeah exactly like us not worrying about all the CO2 30 years ago "because the atmosphere is so big mankind couldn't possibly make a change"

We should balance ourselves with nature now instead of dumping it on the future.

This way we're solving the CO2 problem the way a gambler solves their debt by borrowing more money to pay off loans.