it actually says if a service is defined as a CEX then it needs to be regulated.. it does not say all services need to be defined as a CEX
If a store accepts bitcoin and does not keep them in a regulated exchange, it can be considered "obfuscation of destination". If you swap bitcoin for an altcoin and then the altcoin for bitcoin, it can be considered "obfuscation of destination". If you move your bitcoin across your wallets, it can be considered "obfuscation of destination". Anything can be considered to obfuscate unless you report all of your transactions to the government or do everything inside a regulated CEX.
read it properly.. stop making up things