Sounds like a lot of guessing. Apparently nothing is written in stone as to why they did this. The explanation reminds me of english teachers trying to interpret poems. It's also odd they mention removing the left arm has significance, but show pictures of statues with the right arms removed... My guess is it is related to some common speech, like a saying, or a gesture of some sort. Like flicking of the nose is a 'f…
Because religion is the drug of the unwashed masses, and there is a lot of those around everywhere.
In addition, would you please stop posting uncivil and/or unsubstantive comments? You've done it repeatedly, and eventually we ban accounts for that too.