Blah blah Avatar, 3D sucks blue cat people DAE no cultural impact?? Can you remember any character names??
but seriously it was bold as fuck for someone like James Cameron to make something so blatantly anti-US-military at a time when literally the entirety of Hollywood was united in jerking off American imperialism. It was not the least bit subtle and that makes it all the more impressive that Cameron was able to make a pointed takedown of Iraq-era militarism on such a scale.
Starship Troopers was actual satire though. Avatar was really ham fisted and obvious to the point of being patronizing and shallow and that's why people don't like it.