I too found this with their previous attempts.
I have my Chat personality settings stripped right down to no-fluff. I'd want voice to be more akin to the Star Trek computer, and less akin to as you said an AI friend, but previously it was tuned too personable/friend-like.
Star Trek computer voice model is something I have yet to encounter, and I've looked repeatedly :) It's not about a specific voice, it's the fact they managed to capture "I am a utility" perfectly in the voice. Our modern friends do not want to be thought of as a utility, but to engender trust and agency all of their own and that's a huge problem for me.