Rather, I think he's looking for the shipboard computer in Star Trek. Which is actually an excellent example of the untapped potential that voice-based computing holds.

The ship computer in Star Trek was always hilariously underpowered. They had to put an android on the bridge to operate manual controls during battle, for god’s sake.

It's also an excellent example of designing a user interface to look and sound cool on screen, rather than for usability, which is how I feel about most voice controls.

The operative word is assistant. Voice assistants should be able to do everything a human assistant can do.

the entire value of a (voice) assistant is that it can quickly and reliably deliver results. You don't need Data, but the system needs to be robust enough to work quickly. If you have to ask five times or spend minutes thinking about how to phrase the question, it's not assisting you in anything but wasting your time.

[Commander] Data

Presumably, at some point Data, who was a Lieutenant Commander at the outset of TNG, was a Lieutenant. (This may even be the case in one of the novels in which he features set prior to TNG.)