First off, are you talking about attending at Daytona/Prescott? Or the Air Force online/correspondence classes? Are you attending just to get a degree or to pursue a flying career?
For attending the actual campus, the flying is way over priced. You do not need an aviation degree to be an airline pilot and most on here will probably recommend a degree in something else. Your GI bill will not even begin to cover all of the costs of the flying program there.
For attending the online/correspondence courses. Yes it has a reputation as a degree mill. Particularly for Air Force Officers checking the master's degree square for promotion.
Full disclosure, I didn't attend either version, but did look into attending the Daytona campus when I was in High School.