No, actually one of the biggest things students struggle with at IFF is instrument procedures.

That is followed closely by an inability to fly tactical formation.

Both of those are followed by an inability to fly defensive BFM.

I never busted an IFF student for hitting jetwash, but I've definitely busted them for instruments, tac form, and DBFM!! The BFM busts, by the way, were usually for flight discipline things like failing to call blind, regularly smacking the floor, or overflying bingo.

Keep your eye on the appropriate threat. Fly a solid jet with good basic airmanship and flight discipline and you will have the highest chances of success. Flying good BFM is NOT the objective at IFF. The objective is to see if you can still maintain good flying skills underneath the stress and task saturation of learning/executing BFM.