Most Reformers consider anything not visual ID as iffy at best, a liability at worst. Aircraft aren't really my thing, but thinking on it, seems like the original pure fighter F-16 would have been a fix to the F-4's problem's in 'Nam. Which the F-15 was supposed to be, until the Pentagon ruined it by putting a second engine and enough electronics to kill things before they got in gun range, ruining it as a dog fighter.
Wait, was Boyd a spiritual Marine who got lost and ended up in the AF? Abrasive, problems with authority, independent, lashed to tradition.. Like a lot of his disregard for technology and need for specialized tools makes sense for the Stockholm Syndrome of the Poverty Branch. Maneuver Warfare was a perfect fit for them and they love the OODA Loop. It makes sense to be wary of new developments and stick to the old ways when 'new developments' have been sitting unused in an Army warehouse for 25 years before you get them.