They completely ignore the hundreds of other successful flights of the four free flying Bedsteads and always quote this one disaster. This is known as cherry-picking the data (taking examples to suit a point and totally ignoring the rest). This is a very common practice amongst false conspiracy supporters).
Besides, the thruster that failed didn't even exist on the real LM, so the same problem wouldn't occur on the moon anyway.
This surviving simulator is on display at Hampton, Virginia. A moon rock is also on display; photo by the author.
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The hoax supporters keep bashing on about this particular accident. They say that "if a skilled pilot can't land this on Earth, how is he supposed to land one on the Moon?"