It’s not remotely anti-American.
Anti-Consumer (trash will kill the planet?), anti-capitalist (evil space corporation doesn't want anyone to sneak out of their captive business model, so they are bad guys?)....name me a theme in the movie that's not identical to something of which Michael Moore wouldn't do in a documentary in space?
That is not what I have read at a number of conservative review sites - and all the libs a KosKiddies love it.
I assume you saw it? I have not.