Whats the alternative? How do i coinjoin without giving up my xpub?
You could say that these guys behind https://dojobay.pw provide a service altruistically, but the thrust is that they collect your XPUBS.
This shitty circus of self-proclaimed privacy fighters (Samourai fans) that run honeypot servers and invite naive users to connect to them must end.
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Discussion
Wasabi wallet or joinmarket. Coming from Samourai you will probably get along better with Wasabi but it's a desktop tool, so it's a bit more involved than a well sandboxed apk on your phone.
You don't have use Dojo bay, you can run your own Dojo on Start9 and not share your xpubs with a third party.