That saying is what it is for good reasons, but the path to post-capitalist dystopian hell is paved with bad intentions covered with plausible deniability.

I'm sure they'll sell this on what it can hypothetically do that is useful to the owner, but I don't think any of us need to pretend this will be anything other than something inimical to our desires in the end. I don't need to give them their deniability.

The system could work just as well for the user, stored only on the users devices, syncing in encrypted form only.

The plausibility in plausible deniability evaporates instantly with device/service/software provider's accessibility.

But faux plausible deniability seems to be just as good of a fig leaf.