As a graduate student at a top research university I have to ask: where do scientists write concisely and accurately? That is the opposite of my experience. Academic writing is very obfuscatory and frequently full of typos, grammatical mistakes, or just straight-up inaccuracies. I blame the conference publication review process.
I can't deny you your experience (especially as you have more of it than I do), at the same time, I can only echo my own. I don't know what your field is, mine is biology, and while we too have our share of obfuscated papers we also have many that are indeed as I described them above.