Decentralisation means more people get responsibilities and therefore are liable if something really bad happens. It doesn't mean regulations don't apply.
With the way Tornado Cash went down, I disagree that DeFi is "deregulated". The stakes are as high as ever for the people working on these projects. The people getting scammed by DeFi companies just don't have as much money to burn on lawyers and influence to take action when their deals turn out too good to be true.
It can't go down without Ethereum going down, in the same way several blockchains contain child porn that can never be removed without taking down the entire chain.
Yet donations have been refused out of fear of being branded with the USA's sanctions for dealing with a sanctioned company.
With the way Tornado Cash went down, I disagree that DeFi is "deregulated". The stakes are as high as ever for the people working on these projects. The people getting scammed by DeFi companies just don't have as much money to burn on lawyers and influence to take action when their deals turn out too good to be true.