My take for what it's worth:
1) JQP is the Maury Povitch of the Air Force, shaking the bushes for whatever he can spin to max perform the anger of his audience. I take everything he says with that context.
B) I signed the bonus in FY14 (on time, that is, not as early signer) for $25/k for 5 years. In that year MAF pilots were not offered the 20 YAS option. That was only for fighter pilots. The next year the Air Force offered the 20 YAS option to MAF pilots and extended that to FY14 signers. So in effect I signed up for an additional 4 years of ADSC for an additional 4 payments of $25k. The Air Force could have just said "screw you FY14 signed, you get 5 payments and you'll like it." Instead they offered an increased bonus for a additional ADSC. Which is what they're doing this year.
Yes, I think the Air Force should offer the increased bonus amount to the early signers. I think the language of the legislation prevented them from doing that without having the additional ADSC. This seems to me to be in line with how this played out in 2014-15.
I think the Air Force bureaucracy is faceless and doesn't care about individuals. But on the personal level, I don't think it's staffed solely with people who are just thinking of ways to screw someone.