I am aware of that and the Europe, Pacific and Global TripleA maps restrict that kind of movement.
No, also on those TripleA maps TripleA incorrectly allows Non Combat Moves during Combat Move Phase.
I understand the idea behind restricting it but it is more for unit movement tracking in the board game.
One idea behind the rules only accepting combat moves during combat move phase is that some moves during Noncombat Move Phase are based on or enforced by results of the Conduct Combat Phase. You cannot know these results during Combat Move Phase.
As the (maybe unexpected) result of a combat a fighter needs a different than expected landing place on a carrier. Now in case you hadn’t moved a carrier in reach during Combat Move Phase (with a legal combat move) that carrier in the given situation must move during NCM to allow the fighter to land. If that carrier had been moved illegally during Combat Move Phase it would not be allowed to move again or would maybe be out of reach.
When playing digitally it only makes it easier to forget to unload or reposition troops.
TripleA cleary indicates which units have not moved yet so usually you should not forget any movement action.