I certainly would not have devoted the time and effort for my online MBA if the AF didn't force me to. Even if the AF told me it was required for promotion, but I was going to pay for it myself, I would have mulled over my options for quite some time before committing myself to $10K + out of pocket for a chance to be slightly more competitive than my peers on a promotion board with an 80%+ selection rate.
Further, if the Air Force wanted me to get a real degree, with a real time investment, they would create opportunities for it. Even with TA paying for my online school, I still took the easiest route I could. Why? The Air Force already pulls me away from my family enough with deployments, TDYs, early morning and late night flights/SOF/Top 3, OREs/ORIs, working weekends to prepare for said OREs/ORIs, the list goes on. I wasn't going to give the Air Force even MORE of my time by committing to a program that would require hours every night to complete. I was not about to tell my daughter "Sorry, I haven't seen you in three days, but I can't play right now because I have to write a 20 page thesis".
If I want to invest my time, money, and effort in a real master's, having a BS online MBA won't stop that. But it does put the check in the box in the fastest manner possible. If the Air Force values education, they'll stop making it a box to check and invest in actual educational options.