[Mobhack]

There is no way to have a campaign with no air strikes allocations, bar a user campaign where the designer made it so.

The air strikes preference is only used for individual battles in the battle generator, campaigns (apart from user ones) treat it as XXX. About the only time yje air strikes is referenced is in the initial core purchase - set it for P1 in order to have air units available to buy, if you want helicopters in the core/ But its been a while since I bothered with core air in MBT, so it may be a case that if not offered air formations then exit and restart till you do applies in that case.

What you could do is back up the OOB(s) the AI will use, then find the strike air formation in mobhack, and overwrite that with a formation that has what you desire and that is date valid as well (i.e. copy an existing arty formation). Remember to copy back the originals after you are done.