Actually I had fight off those toads in the F-15 and F-22 programs. The “not a pound for air to ground” mantra in the F-15 program was the slogan but the real story was with minor structural requirements “adjustments” in the F15A/B, the ability to deliver the F-15E version was pretty simple and without a lot of penalties to the F-15C/D or E. It’s just not as good as a F-15E mission type designed from the start. Such a design would have have better capability but the F-15E is a pretty good air to ground weapon system.
Same story on the F-22. With some minor sizing changes in the YF-22 and YF-23 program, the weapons bay accommodations worked both for AAMRAM and bombs. Again minor mods results in a dual, if not optimum, role.
The real problem IMNSHO, is this fascination with “commonality” and the degrading of the industry because of few if any new starts and the one size fits all roles and “it will be cheaper” superstition with the resulting ballooning of requirements and inevitable cost growth. Designing a plane for say, Air Superiority and adapting it for mud churning is easier than trying to optimize everything from the start. Better to design a primary role and adapt as practical to other roles.
Take the TFX/F-111 as another multi role fiasco where I was a lowly engine engineer. The USN version never really worked and was canceled. The USAF Version, originally designed as a low level penetrating nuke carrier AND Air superiority fighter to replace the F-105 Thud and F-4 Rhino, not to mention the USN F-8 and A-7, finally found its home as a USAF bomb truck and later EW platform.
Cheers
PS, John Boyd was a great thinker but Pierre Sprey was a jerk. If I heard that the blitz fighter was the answer to the ATF (F-22) requirements one more time back in the day........