GG - here's a case in point - in 1981 two ASW SKs were directed into each other in very poor vis just S of the IoW. We buried five people, including a course-mate. I've not seen the BoI report, so assuming that both aircraft had correctly followed the controller(s) instructions on height/heading, then it's fair to say that it's not the fault of either captain.
Even in the case of the F-16 above, it's highly likely that errors/omissions by others contributed to his CFIT.