Off topic, but I had to look it up. I'm aware that it's becoming more common, but thankfully nobody in my world does it. It's called upspeak or uptalk, and it described on Wikipedia as a "
high rising terminal". Valley girl speak is often referenced when talking about origins. So I blame
Frank Zappa.
It has been said that if you use the HRT technique, there is reduced tendency to be interrupted because people assume that you have more to say. For someone who tends to not make clear, definitive statements and needs to express things with multiple sentences, I can see how this would become a habit. It certainly matches up with the speaking style of the Intuitive Machines Spacecraft Communications controller.