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 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.
I have always been leery of data collection, but I have my own parallel: there was a lot of optimism about the benefits of personal computers in the 1980's and 1990's. Of course, that was pushed by the industry itself. I have since realized that what was happening then was not all that different from what is happening today. The outcomes were different because the tools were different, but it basically reduced/reduces to a bunch of people trying to enrich themselves by promising one thing and delivering another.