I've been in similar environments. Kids are flexible, resilient, and don't really notice things like this after a very short time. I was in a summer program in high school where we used Unix, and I think there was a one or two week curve before it was just in the background. In schools, kids put up with much more bizarre things. At the end of the day, they just come to understand that's what the world is.
I think most didn't notice. Basically everyone in our class used their smartphone as primary computing device, only a few even have used laptops or computers at home. Those that did were quickly able to adapt and I only rarely heard complaints.
in France most (if not every) public school uses OO/LO - and not since a couple years ago, it's been almost 15 years. Never heard of anyone having an issue with it.