Never. Now that I have your attention, when it is a deliberate choice. But that makes it "Active management choosing to be Reactive". Why would anyone do that?
For the answer, look into the concept of initiative in combat. Many of the same concepts apply to good, active management. That is, instead of sitting and waiting for something to surprise you, you make a decision to wait and watch something before acting, instead of acting precipitously. This looks like reactive management, the same way a boxer taking blows in the corner looks like he is losing. It comes down to what is going on inside the person's head.
Panic? The boxer is letting things be done to him, and is on the way to a loss. Or a strategy? He's wearing out his opponent, and avoiding taking crippling damage while he waits for an opening.
I highly recommend the art of war for executives, as it is an easier read than the original, and it is applied to business. Sun Tzu has very good points on what is initiative, why it is vital, and many other things.
To quote him through the filter of translation:
Therefore the clever combatant imposes his will on the enemy, but does
not allow the enemy's will to be imposed on him.
Previously, he states:
What the ancients called a clever fighter is one who not only wins,
but excels in winning with ease.