That’s a fair suggestion, but still, that’s not “spying”, that’s just called “complying with the law”, if any service didn’t, they’d risk shutting down.
The problem is at the root, it is that they have or can have the data passing through your address (unless you encrypt everything you can with PGP, but who uses that realistically? I wish it were more popular…). When they have the power to get relevant data on you in any way, you can’t ever fully trust them.
The only sure way to protect yourself from such threats is by using a whole different kind of platform where the provider couldn’t ever get the data, not even if it wanted, all private instant messengers are what PGP wishes it could be and way way more and meets exactly that purpose