You have no clue what you’re talking about and it’s just a skill issue. Likely the only reason you been able to get ground to air kills in the IFV is because it is a completely bugged and a broken mechanic. As the pilot can’t even tell if there is an incoming missile and by chance you do flares do not counter (weapon description on the lock-on munitions says they should).
You are practically cheating and say designed perfectly, you should uninstall.
Many options to take out air, helicopters probably the easiest with the massive amount of rpgs shot and the fastest ever aim guided munitions in the game. Two missiles than can be shot in one reload from the ANTI AIR VEHICLE will take out any air.
Or get good and challenge the enemy in a dogfight, rather than sitting back at spawn bug abusing. Only such a baseless comment comes from someone who plays like that, skill issue.