Got to say I agree, unless your lag is really bad or you suffer from a disability that would prevent you from hammering two buttons alternatively (such as arthritis) I don't see the need for this addon.

Still I guess its nice that its there for those who do struggle, because after all it is meant to only be a 'casual' achievement.

I got it this year spamming my 1 key and clicking my trackpad. Took several tries and I may need CTS surgery now, but I got it. I didn't realize i had done it either i was concentrating so hard. Also, managed it with only 9 torches. Don't know where I lost the one.. but I did it.

Agreed.
All I did was put the torch on my bar key-bound to "1".
Then I placed my mouse at the feet of my toon.
After that I mashed the "1" key and my mouse button as fast as I could at the same time.
You don't have to try to press the torch and then the mouse button in sequence.
Just mash them at the same time as fast as you can.
It looked like I had 6~8 torches in the air at any given time.

It seems silly, until you factor in that there is a 310% speed mount riding on your ability to get this done. Succeed, and you can go on to get the Violet ProtoDrake. Fail to get this achievement before the holiday ends, and all your work on Long Strange Trip is wasted, given that Cataclysm will most likely drop before you get another chance at it.

This isn't hyperbole, either. I've read reports of people who got stopped last Hallows, because the squashling didn't drop for them, and that was the only achievement between them and the drake. No one wants the juggling achievement to mean it will be another year, minimum, to get that mount.