Practically, "If they don't have anything you want, say no" doesn't go well when you're asked to do Excel things by upper management. Upper management leans on your boss, you boss leans on you, and either you sacrifice week after week on the PivotTable altars to the great Excel god, or quit.
You _can_ try to get favors back, but becoming a go-to for Excel means you'll spend more time on that skill and less on others, like software development. If you want favors, be a go-to; if you want to get better skills, don't advertise other skills.
You _can_ try to get favors back, but becoming a go-to for Excel means you'll spend more time on that skill and less on others, like software development. If you want favors, be a go-to; if you want to get better skills, don't advertise other skills.