You could be right but I would like to put forward another possible reason. They could be telling the truth. I studied computer science late 90s and to this day I cannot use MS Excel beyond summing a column of numbers. To make matters worse I work in data engineering space. So people often assume I do not want to help them when I tell them I cannot help them with their fancy spreadsheets. I have never owned a Mac book and sometimes I get asked for help and I haven't a clue how to help. The answer is how come but you have been working with computers for all these years.