After an exhausting session with Victoria's Secret Police, Kevin
Brooks blurted out:

How many of those opponents to the F-4, or even the F-16, were in the
USAF, though?

Against the F-4? Hmmm, guys flying single seat fighters that carried a
gun. "Two seats? WTF do you do with the wasted space?"

How about the HQ Staff folks that were concerrned that if the F-16
were fielded, the F-15 program would suffer. How could the F-15
program suffer? Some bright person would figure a way to task the F-15
for surface attack ("not a pound for air-to-ground") and give the
air-to-air role to the F-16. In Trest's book on Boyd, he mentions the
concerns the F-15 supporters had about the F-16.

And there were more than a few officers above John Boyd that flat out
didn't like him, ergo his pet project.

Not sure how accurate that is; from what I have read, the F-16 was
planned as a multi-role platform during its initial development phase,
well before it ever entered into service.

Read Trest's book on John Boyd. His proposal for the F-16 didn't even
include a radar, much less thinking of carrying a bomb. Boyd's concept
was air-to-air all the way.

Juvat