what if you filled a bag with dice and blindly pick one die at a time and put it on the table and then look at the number on top. that eliminates any bias that is in the dice.
That doesn't eliminate bias. You still need to use your hand, and pick... randomly! But since you're a human, you can't do that properly. Also, if the dices aren't fair, say the number 6 has a 50% chance to come up, then the bag is likely to give you mostly sixes.
but again, i challenge anyone to show me a story where someone used dice to generate their bitcoin private key and then later said they got hacked. if they got hacked it's because of something else rather than a bad private key.
Unfortunately, this is not how security works. Just because somebody hasn't fell for it, it doesn't mean you can't be the first. Figuring out a very complicated way to generate a Bitcoin wallet, might have a smaller attacker vector, but it doesn't make it more secure. As I said before, I don't know a case of a person who used an airgapped machine to generate a Bitcoin wallet using the CSPRNG, and got ripped off.