I think he means uncensorable or at least very very hard to censor.

The problem is it could be very expensive. Think NFT but the metadata is the source code of the emulator. You're not removing that from the blockchain, ever. It also needs to be a popular blockchain, like ETH, BTC, SOL or whatever people still use today.

There are "coins" where your stake is disk space but if it's not a widespread thing it just dies off (conway GoL style)

I think he's referring to the distributed portion of a blockchain. A centralized github-type for profit business is required to respond to these takedown requests. Nintendo's lawyers would need to go after every individual node hosting this vc blockchain.