They should clearly spell out what is and is not "private". As it is we simply have a blurp about some undefined guarantees. And some comments here in thread saying "this is as close as you're going to get to local GPT" are deeply wrong. But then there is easy VC money (just like with ADs ..) and certain "clever" geeks throw social responsibility out the window as usual and are pushing all sorts of deeply invasive applications ("let our proxy for Microsoft hoover your inbox!") based on these undefined "Privacy guarantees".
If we accept this just we accepted the very flawed solutions we were given by corporation regarding social networking and ads, we are going to be stuck with it, suffer the consequences, and there will be no incentive to develop alternatives that actually address issues and work.
Homomorphic Encryption works. It just doesn't work very efficiently right now but that is an intellectual problem that can be solved if we push for actual privacy for this critical technology as it will be fully enmeshed in all parts of our lives.
"Think of the children" if that helps.