I don't think I could claim it was a great movie. The fact that so many people missed the point and the movie was unenjoyable if you did is proof that it's not a great movie. I think the ending where a narrator suddenly appears was supposed to be the final reveal for anyone who hadn't caught on yet that the whole movie was just propaganda from the future, but even that was ambiguous since it's just as easy to interpret it as an homage to the WWII era films it had been mimicking.
Their tactics were also absurdly bad. The irresponsibly inadequate military was by design.And it takes WAY too many shots to kill a bug. Give the guys some better firepower FFS. These guys can travel from star to star but they don't have explosive rounds to use against giant bugs with thick carapaces? Come on, man!