They hate it because it's a closed source hardware tied device that succeeded while Amiga on the other hand is a closed source hardware tied device that failed.
The device needs improvement to be sure. Multitasking is a big missing piece, the "keyboard" has no tactile feel, they need to work on their upscaling of iPhone apps, the fonts look bad. And the thing needs at least two cameras. But overall I'm pleased with it. Oh and iWork needs a button on landscape to get to the save pages, it sort of silly to have to turn it portrait to get the save button....
Oh did you figure out how to put iWork documents in folders? I can't seem to find a way to do it.