Earlier quoted context omitted.
This isn't a subjective ethics problem. It's a competence problem. If you can't formulate your own thoughts into a coherent statement (the purpose of learning to write) then you'll be useless to anyone that needs new coherent arguments.
That's a bit of an overreach, isn't it, calling my writing incoherent and incompetent? (Edit: Parent clarified that "you" is meant to mean a hypothetical student, not me.) If more information is needed, as was the case here, we can ask questions. That's got nothing to do with author competence. It's not an essay contest. And why assume we know it all, filling in the gaps like that? In a discussion of ethics, this is…
This doesn't have to do with me either -- the market will determine whether any one person is valuable enough to employ (or promote). My only claims are that being able to write makes one more valuable, and that plagiarizing assignments at school fails to teach one to write.