If the F4 d has AIM-120 AMRAAM it can engage an F-18 at a fair chance of victory as the fight should be Beyond visual range. F-4E Peace Icarus 2000 has AIM-120
Only rules of engagement makes the Turn and Burn a requirement.
and as a bomb truck the F-4 is still a good platform just old and expensive on the fuel side.
Another problem is if you try to turn and burn an F-4 you rapidly run out of mission capable aircraft. A very maintenance intensive aircraft.