I also have a non-IT friend who worked in a local bank. He mainly produced different kinds of report for analysis. His main tool was Excel and he was very good

I also have a non-IT friend who worked in a local bank. He mainly produced different kinds of report for analysis. His main tool was Excel and he was very good at it. He told me the reason why he became good at it is, in enterprise, IT resource is grouped into a single department instead of spreading across every department. Acquiring IT resource is difficult and slow. It is faster to just use excel instead of proper tool to generate the reports. Finally he acquired the skill.