Perhaps there may be CEX platforms that are less strict or efficient in terms of detecting transactions related to the mixers, but as the client continues to do this continuously, they may block his account or freeze his funds one day and request documents for the source of the funds, and this is 100% expected if the FBI seizes the mixer service. Not your keys, not your crypto; everyone must believe in this. They can make any unfair decision against any client at any time to escape regulatory penalties from responsible authorities or pay fines. Even Now that centralized exchanges have removed privacy coins, how does CEX allow privacy and decentralization for its customers? I do not recommend using them except for small amounts, away from mixer transactions and signature campaigns, and looking for better alternatives.
There must be and some Cex also have governments that are pro Bitcoin and I also don't recommend trusting Cex completely because it is not recommended for storing assets. Cex is only a place to convert crypto into fiat and the only way is to use p2P, there is no other way so Cex is still needed for several transactions that must be carried out.