The study is looking for facts and the questions can only paint gaming in a bad light if people answer them that way. And if people are being honest and it does show that gamers don't sleep enough, it's not because the survey is trying to portray gamers as one thing or another, it's because it's true.

EDIT: Paranoid much? The best thing you can do about that is answer the questions honestly yourself. Withholding your own answers isn't going to help anything.