The first episode of Star Trek: The Original Series where we hear the ship's computer speak is "Mudd's Women" filmed starting June 1966. UFO had SID talking from the very first pilot, filmed starting April 1969. So, less than three years apart, and not much time for the public's perceptions to change. On the other hand, HAL showed up on screen in the interim, so maybe that helped. And big shout out to Lost In Space's Robot B9, with more personality than all of them put together, and who showed up before for all of them, in 1965.