The language is quite ordinary, but it does convey the message. It's functional, even if it lacks punch. Sentences tend to be mechanical, rather than fluid. The text hums along efficiently, but it lacks rhythm or grace. It is pleasant rather than musical.
Awkward constructions force the reader to slow down or reread.
Errors in writing conventions begin to impair readability. While these mistakes do not block meaning, they tend to be distracting. The paper lacks a central idea of purpose. The reader must make inferences based on very sketchy details. The writer tries to cover too much.