Because until you spend many hours getting used to it, it’s annoying as hell. I’m a longtime bash user, but if I have to do anything in PowerShell, it sucks. Bash is even less friendly to novice/casual users due to tools like awk and sed being totally obtuse. When you’re unfamiliar with the workflow, not being to see everything you’re able to do at a glance is pretty frustrating.
BU is a good bet, sticker price is expensive but the financial aid is pretty decent if you can take advantage. I’d definitely recommend them picking a school somewhere they’d probably want to live after college, as getting employment in the same area you’re going to school is much easier.