Q: Please don't Down vote me for asking, because I'm very out of the loop with Final Cut Pro and don't edit videos, but what has caused the outrage? What functionality has Apple removed in FCPX?
A: They nerfed it. It essentially became iMovie that you had to pay for. They've slowly been adding features back to it but the damage is mostly done.
Having only recently seen Nerf guns, I laughed pretty hard at this. Wikipedia knows this sense of the word though. As does UrbanDictionary. And as the more reputable dictionaries clearly don't.