They are certainly different but they are crossing each other and in either cryptocurrency or bank, fiat currency, we all have our privacy, identity to secure or hide. I don't see activities and interactions with cryptocurrencies can be called as non-real-life things.
We actually use both cryptocurrency, fiat currency, banks and many platforms so if our privacy, identity is broken, leaked on one or some of those areas and platforms, we lose our identity privacy forever. It is only matter of how near or far it will be spread around and we have no chance to control how people will spread it or sale it for their benefits.
If we care about privacy, we have to do it at all places, not only in either cryptocurrency or bank.
How it's possible to protect your privacy on banks?
Banks' employees: Sir, could you give me your ID card, please?
You : No, I want to protect my privacy.
Banks' employees: I'm sorry, but we need your ID card since it's one of requirement to create an account.
You: No, my privacy is way more important STFU.
If you use DEX, the banks won't know if you trade Bitcoin because you're doing it P2P, only the sender know you (but they only know they've transact with you, they don't know you real name, face etc.)