[N-Krause]

Yeah of course, technically that is true. Still when talking about e2ee in any context it implies to the non technical user: The company providing the service cannot read what I am writing.

That's not given in any of those examples. In the case of ChatGPT and this toilet sensor e2ee is almost equivalent to 'we use https'. But nowadays everybody uses https, so it does not sound as good in marketing.