That doesn't mean they weren't taught, they probably just didn't practice. My kids (elementary school) play Minecraft, write stories in my computer, and like searching for stuff online (Amazon and YouTube).
That said, we don't let them use tablets or phones very often, because we don't want them getting that much screen time. So it could come down to parenting. That said, I'm a software engineer, and I'd teach them if the school didn't (in fact, I started teaching my first, and stopped because they taught it in school).
What I don't understand is they teach cursive when that's quite useless. IMO, they should spend that time on more typing practice and maybe calligraphy (much cooler than cursive).