The parallel concept in Miri never bothered me. I always thought it was due to limitations of the budget. They had to explain why the planet looked like earth both on the ground and from space.
A bit of trivia for you: The scene in the picture I have posted on Miri's planet is actually the set from The Andy Griffith Show. You can see Sheriff Andy Taylor's court house on the left hand side of the picture.
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The thing I didn't care for about the show was the annoying kids that were yelling "bonk, bonk."