Comment by dr_hooo

Treating academia as one homogeneous group isn't helpful. In my field (CS) good authors do use concise and easy to understand language to get their points across. Of course domain specific jargon is included, but that is not surprising, as you can convey much more information this way (as you don't have to explain all known concepts over and over again). The target audience is usually well familiar with the language. Scientific writing is not usually meant to be consumed by readers outside a certain community.