The new French rules apply to Virtual Asset Providers and exchanges offering crypt-crypto transactions under French jurisdiction. The rules do not criminalize the usage of non-KYC'd exchanges by residents of France.

https://www.theblockcrypto.com/post/87001/france-crypto-rules-mandatory-kyc-crypto-to-crypto

It doesn't say anything about decentralized exchanges or liquidity pools in foreign jurisdictions. Residents of France are free to use them as they see fit.