Comment by antonvs

> The user has no right to privacy. The same as how any internet service can be (and have been) compelled to produce private messages.

The legal term is "expectation of privacy", and it does exist, albeit increasingly weakly in the US. There are exceptions to that, such as a subpoena, but that doesn't mean anyone can subpoena anything for any reason. There has to be a legal justification.

It's not clear to me that such a justification exists in this case.