As we know, there are currently many cases of crypto hacking, especially this often occurs in ERC20-based tokens. So to anticipate this, should Ethereum add the "Frozen Wallet" feature just for certain Adresss to their smart contract? I think this way can prevent the hackers to selling their loot. Although this method will change the crypto vision from "decentralization" to "centralization", but if this method is effective I think it's no matter.
What do you think?
No, this is wrong. It will compromise the whole idea of crypto-currencies and the paradigm of your keys = your coins.
I wouldn't give a satoshi for coin where somebody somewhere could decide to lock my own coins.