@Froggo There was, shortly before and during my lifetime, a sea-change in what was considered "acceptable dress" for a work environment.

... and a big part of that change came purely from the people who could build robots and program computers being the people who wore cat-ears and T-shirts, and when someone has a skill you don't, and you need them to do it for you, you just can't tell them what to wear while they're doing it.