I apologize ahead of time for bad grammar or typos, but I am feeling spacey today.
"Daily Writing Tips" has an excellent post on how and why certain people choose to write in a hard to understand manner. http://www.dailywritingtips.com/corporate-english/
I majored in English and had an extremely difficult time with research writing, so I admit to a certain amount of prejudice.
Academic writers reward one another for having the ability to write in what they believe to be an esoteric style, but I think they do it to try to prove their superiority. At least that is how most of them presented themselves to me.
I want to share an Orwell article that "Daily Writing Tips" also has on their website: .http://www.k-1.com/Orwell/index.cgi/work/essays/language.html I sort of put the link here for myself, but other people should benefit too. I experienced a lot of disrepect and cruelty at the hands of people who write in this manner, so I like to read this article because it makes me feel better!