it’s tactile and people aren’t waving their hands about like idiots. Also having to hold your arms up in the air all day long pressing on air buttons has to wear out the arms over time. It’s not practical.
Except the characters in the show using them didn’t have any problems and don’t feel that they look like idiots, so it sounds like you have an issue with something that people in the future find normal. Which is the exact opposite of your usual rants that the people in PIC don’t look or act ‘futuristic’ enough for you. So what’s your problem?