I’m no expert so take this with a grain of salt.

But basic logic says if the data (your prompt) gets processed by anything then it needs to be able to read it. Therefore its not private by default.

Sure, they can encrypt it (where? At rest? End to end?) and not retain history etc, and that can make it more private, but it won’t be private.

That’s like Proton’s Lumo which is “private” in the same sense, but the requests are being sent to a server to process so that data is read by something somewhere. I use Lumo BTW, but never put personal info into it etc.

Then no matter how private it is, if Meta starts using it it’s immediately spyware.

If you want true private you’ll need to run your own local models.

If you don’t use a google account what do you do to get apps? Fdroid? I also suspect not having an account removes the Chromecast functionality.

This is why despite me self hosting some things I don’t rely on vaultwarden. I’m a flawed person and my family has no idea about anything. I don’t need to stretch my imagination very far to think of a handful of reasons why it would fail my situation. I’ll gladly pay for a password manager to not have to deal with that.