The spec doesn't say that q
or blockquote
have to be things people actually said. In fact, one of the examples of blockquote
is a Shakespeare sonnet.
So that's the objective answer: The spec doesn't seem to say one way or another. You could take the language "...quoted from another source..." really literally, but I don't think it's meant to be taken that literally.
Subjectively, FWIW, as long as you're not being misleading (regardless of the markup you use), I wouldn't call it inappropriate.