Leader Activation

[fanghawk]

activates the UNITS in an adjacent hex

I do get it, thanks. Your point is an excellent one and that seems to be the crux of it. Leaders don't activate adjacent STACKS, they activate adjacent UNITS...which may or may not be stacked. There's a reference later in the rules that says, "if the stack self-activates (3.11)..." or something to that effect. So 3.11 would seem to specifically be dealing only with self-activation. I guess the corollary would be that stacks always self-activate whereas units can self-activate or be activated by leaders.