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They call it a remake, but is that an accurate word if the entire thesis of the movie has been changed, and only the names have been kept? In the original, Klaatu came to warn the Earth that unless humans behaved and quit making war, the superpeacekeepers that his race have created, like Gort, will destroy it. In this, according to your review, Klaatu has become the superbeing, and does all the threatening himself. It was important, in that movie, which is over fifty years old now, that Klaatu was caught in the same trap as humans.
It had its lame moments, yes--Klaatu explaining that he comes from a planet several millions of miles away, maybe Saturn, which is a physical impossibility, and so on.
But I do remember that movie. Will probably not see this one, not because of your review, but because I have learned to avoid movies with Keanu Reeves.