Well then apparently the US is metric enough, proving this whole discussion even more pointless than it already was.
We are not discussing whether it is crucial to use the metric system to land on the moon. We are discussing why the US does not adhere to the metric system to the point of deprecating old systems of measure.
It is clear that some in the US feel uncomfortable when people discuss what, in the modern world, seems to be an odd cultural trait.
So, to try to shut up the discussants, the moon landings or other equivalent event are mentioned, implying that the imperial system is not only an alternative to the metric system, but also probably even better, since it helped a nation that apparently doesn't give a toss about metric achieve something the other nations couldn't.
When it is shown that the US actually used metric to achieve something, debunking the above argument, then it is said that the US is "metric enough", "metricated where it makes sense" or the like. But this is exactly the moon-landing argument, only that you replaced imperial with metric. However the issue we are discussing is left unanswered.
In short, this kind of argument is a fallacy and this thread is still going on because we are not falling for it.