In other words, if you don’t want to pay more for fast food, then you don’t actually want to see fast food workers earn a better wage.
If a business relies on exploitation, it shouldn’t exist. If paying the workers a living wage means raising the prices beyond a sustainable level for the business, this business shouldn’t exist. If a business pays out millions in bonuses to it’s executives while the workers are relying on government subsidies, the business shouldn’t exist.
At best you learn some basic formatting and table calculations, there’s no need to get specific into MS word/excel. There’s essentially no difference between MS and Libre office here. Same with the operating system, if you’re just sitting in an office, reading and answering emails in a browser you don’t have to care about the OS.
Besides, school should teach critical thinking and how to transfer skills, not shoehorn pupils into specific roles and software.