As someone who works on a team of people with different levels of experience, where understanding is more important than some self-inflicted purity test of their unix chops, I will always either do long options or, where that’s not possible, a comment explaining the short options.

No one is complaining about not having time to learn: you’re arguing against a strawman. The point is not to discourage learning, it’s to encourage clarity in a context where it can at times be critically important.