I tend to agree. I am replacing some of my foggers with hazers as the hazers require less electricity to operate, or at least the ADJ ones are that way.
With the haze being thinner, it tends to be less distracting in overall (lack of) appearance. Not to say that fog machines can't also be successfully incorporated into a haze system for that fog blast effect. With the haze, you turn it on and generally leave it on and there you go. Despite it looking like it's not there, wait until the lights hit, and you'll see what the lights do with it, it's fantastic.
Now, depending on how you do things, a fogger can be equally effective. For example, let me go through a few shows at a venue I've done quite a few shows at.
With Chicago, they used some big expensive foggers blown via a large shop-style fan and had them on nearly the entire show as well as before the show to get the room going. Yes, these were fog machines. One set up like this on either side of the stage. When the lights hit: awesome!!
More recent: Olivia Newton-John: No fog, no haze. Jay Leno: No fog, no haze. Of course, different light shows all together, ranging from minimal to mainly a lit stage wiht follow spots, respectively. Moody Blues: Quite a light show, as with Joe ****er, but no fog and no haze, so the lights don't really "pop", if you know what I mean.
I did a show back in December, and I generally don't use fog machines since I am always tight on current. Anyhow, with the "gimmick" lights I have, fog or haze would have been a nice touch to make those lights pop.
Don't use fog juice in a hazer and haze fluid in a fogger, and vice versa. It's not the same thing. Foggers work by heating an element and vaporizing and expelling the "steamed" product. Hazers also work with heat, but it's a mineral cracking process, similar to petroleum refining in a very basic sense.
Seeing as how the ADJ Fog Storm 700 takes around 700 watts to operate and their Hazer is around 300-400 watts, in a pinch, that electricity saved can really be a life saver. Of course, the hazer also costs 5 times as much as the Fog Storm 700. Regardless, I will still be purchasing an ADJ hazer before the end of the year.