No need ;-)I can follow you to some degree only.The conclusions of your chain of argument i do not share.
I am happy that you see where I am coming from.
But what other coherant explanations for the phanomena we observe would you suggest?
Would interest me?
Tolkien inherited the elves from the medieval traditions which seem to reach farther even in the past. In those old European myths the "other people" had a slightly different set of morals, having no problems with behaviours the main human population would consider at least of doubtfull morality and being seemingly unaware that the main human population has a set of certain rules which they are violating. Tolkien seemed to want to minimise the differences as he went along, but those are still visible in the stories.