Nothing is wrong in naming which of them are defi scams. You could pick one and tell us why its a scam to make it clear of us who reads it why it can be considered a scam.
So far the only explanation I found why a Defi project was a scam is because the teams not publicly known. It could actually be legit even if they are anonymous but are added on big exchanges like binance and OKEX. I'm certain these exchanges wouldn't add the token if they can't verify whether this project is legit.
Unfortunately, these exchanges did not verify, there was a tweet coming from Binance head that people should be responsible for what they are investing in the team is washing their hands, so we all thought that if it's coming from Binance it's definitely safe, people should now to think if they are still going to believe projects that these exchanges are going to list.
That's why CZ has more to explain now. That Sushi is new and they didn't even verify who are the people behind it. Binance is just up there to make money like the rest in the exchange business. Sushi already have a new chef as they claimed but its really unsure whether the project can still be trusted.
Its not the project that is a scam, its the CEO though. Basically Sushi protocol is working well but its the people behind it are scam which bascially means they have a product to show unlike the ICO scam that is completely a robbery.
Lesson learn is to first know who are the people behind the project and if they do have more than 50% of the tokens.