As far as i know if that tweet has already erased by CZ and it looks like he didn't wanna take his responsibility to the traders and investors to did an audit before try to list a new coin especially sushi swap. if he was saying like that and how is it possible for him to listing sushi on his exchange site while we know that it has been running by an anonymous person.
I smell something BS from what has already said by CZ.
This is the wild wild west of crypto. There will be scams, but there will be many useful experiments too, DeFi applications are like a testnet to real world finance and the possibilities.
Experiment for what? all of those defi are only repetitive platforms (forked) from the real one that called YFI. If you know the real story behind it and you will have different opinions about that too.