If you're living in the US and this bills passes, you should absolutely forget about centralized exchanges, as you may be accused of funding terrorism because of potentially bad coin history. Unless you buy and store all your bitcoin there, which would nullify Bitcoin as concept in the first place, and you shouldn't do it.
If the bill passes it's going to make bitcoin a different coin to what Satoshi would've wanted it to be.
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.
If ppl want to keep some or all of their transactions private by using mixers it doesn't mean they're trying to obfuscate them because they're trying to hide illegal activity. If the bill passes American's won't be able to keep any of their activity private.