That makes no sense. All you need to do is send the Monero to a new address. They can't block the addresses they don't know, and they can't see the address that you are sending it to. I do agree with there being some danger to it, but not the one that you speak of.
It’s true that Monero addresses can’t be tracked, but when you swap Bitcoin for Monero on a no-KYC exchange, your Bitcoin address can still end up on a blacklist.
Have they enbaled xmr-for-cash? The official install process for haveno dex appears unclear how did you manage it, it's not meant to be used standalone?
I haven’t looked deeply into how Haveno handles cash deals — I just saw their announcement about XMR-for-cash trades. Personally, I only swap XMR for BTC there.
About the install: you’re right, there’s no stable release yet. You have to build it from source after setting up the dependencies (Java 11+, Gradle). Basically:
git clone
https://github.com/haveno-dex/haveno.git cd haveno
./gradlew build
./gradlew run
That’s how I run it.