Your point was that "ordinary people" don't grasp the concept that it is Google, or Amazon, or Apple that is providing the answers when they use a Voice Assistant. In spite of their entire marketing saying exactly that.

They don't need to understand "computer memory or how computation works" to grasp that the person/entity you ask a question to, has to know that question in order to provide an answer. In fact you could have never used a computer and grasp that concept.

You're trying to make this more complex to mask the fact it is a logically flawed premise.