If DEX is going to ask for KYC then that's not quite right. There can be no real decentralization when that happen and I guess this has to do with regulations, if dex isn't going to comply the law then it could be taken down by the governing bodies. They could operate on offshore hosting companies for it not to be taken down right?
So much Dex exchange coming up. Any Dex asking for kyc is no Dex. Even those that claim to be have resemblance of CEX. It's just a matter of time. Regulations for CEX is easier than that of Dex as the regulations will defeat the whole aim of decentralisation even though regulations are much needed in crypto space.