Lots of NPCs don't actually "use" a computer, they memorize steps to get what they want. The abstract concepts common to all computers are unknown to them, meant for nerds only. They've never heard of Linux. Windows is computers to them. The two things they do for their job is computers to them. Facebook is computers to them. If something looks a way they don't expect, they panic. Actually reading what's on the screen is the last thing they'll do because computers are hard, and all the words are confusing.