That's a pretty absurd question, and it would appear you're going down the road of one of those 20th century precepts I mentioned above.
WMLs are inferior because you're required to draw in order to illuminate something.
Well of course it's true that one must draw the weapon to use the WML. However, this notion loses sight of the purpose of lights as tools. The handheld and the WML are not mutually exclusive; far from it, they serve different purposes. The handheld is an information gathering tool. Who's over there? What was that noise? Oh dang, the dog's toy went under the couch again. That person coming toward me while I'm walking my dog at night -- what's that object in his hand? The WML is a threat engagement tool. Someone is shooting up the movie theater, breaking down my door. Or, the same person is toward me at night with an unknown object in his hand, but now he's also saying he's about to kill me.