My grandmother says “if you can’t say something in plain English (actually, she says Dutch), you’re probably hiding something. On the other side of the spectrum I often hear the importance of nuances uttered by fellow scientists who complain about the trouble with (clear) language to cover all those nuances. I do think using clear language leaves room enough for nuance and using this kind of language can help spread messages.
I also think this is a task for any scientist to skip the bad writing and try to be as clear as possible.

Oh, btw, the post of Greg reminded me of the great Sokal Hoax.