The dialog in this movie is simply idiotic. The characters are flat, and the world-building is unoriginal and irrelevant to the story.

There are about zero reasons to sympathize with the Na'vi, as they seem to be just "blue humans" with no special traits, values or principles, other then "they love their mamma-tree".

It was just as awful as the first Avatar. Had they cut 1-2 hours out, this movie might have been a good action flick.

The plot holes and characters that CONSTANTLY have to explain everything ("Bro!") was annoying and made this feel like a childs book adapted by Michael Bay.

This movie was made for people who do not want to think anything for themselves, and it talks down to it's audience by decribing every action and reaction explicitly through hilariously bad dialogue.