No. Two sequences weren't the entire movie.
The entire movie was based on "hey, remember Wrath of Khan?" You can take the initial idea and run with it to something interesting; that's what good remakes do. But it was made with the idea of the audience thinking about Wrath of Khan while watching it. Again, references rather than plot point, and confusing the former for that latter.
The point of Science Fiction is that, because that alien is green, you cannot tell initially that the story is a social commentary on segregation. That is the abstract. It removes the audience from their reality, and then has them see their reality in a different way because people would believe their preconceived notions if you just made it about whatever you were making a commentary on. Science Fiction, done well, makes the audience come to the place they started, knowing it for the first time.The movie's approach wasn't direct enough for you? Did you expect them to actually say something like what you wrote?
Or, you can confront it directly, and flat out mention what it is...but it should still be abstract. Because the problem you run into is someone just saying "this is a 20th century drone strike" which it transparently was. It wasn't modified into the green alien, as it were; something which fit the setting, but was analogous to the issue that was to be discussed.