You failed to absorb all of what I wrote, which was to follow the citations in the article, which are quite sound. That's silly of you. It is also very silly of you to ignore the quote from Tolkien in the article where he comes right out and talks about it.
Norse dwarves are not really much like Tolkien's dwarves. Tolkien nicked some names and crafting skill, but his dwarves are not anthropomorphic rot grubs from the body of a giant and they haven't stolen anybody's hair.
Man, you really have got to read this stuff before you talk about it.
Original sin is not any old sin at all. In the context I'm talking about, it's an element of Catholic doctrine. Again, doing some actual reading instead of explosively guffawing would help you greatly.
You don't have to get snotty. First, I've read Norse mythology (not all of it, but a fair amount) and second I'm fairly well-versed in Catholic theology (even took a grad course at a seminary). Just because I dared disagree with the great eyebeams does not automatically make me an ignoramus.
The elves are not born pure. They're subject to concupiscense, ego and pride... in fact, moreso than humans in some cases. Feanor is no angelic being and his faults are far from merely intellectual. If the elves were born without original sin as you suggest then they would not be fallen creatures and even a venial sin would be a major event for an elf. I'm not seeing that.
For a credible source see here:
http://www.newadvent.org/cathen/11312a.htm
As for the dwarves, obviously the Catalogue of Dwarfs is the source for many of the names. They're also small and ugly and like treasure. And they're great smiths. Just like Norse dwarfs.
Now, if you have a citation from an authentic text (not the electronic poison known as Wikipedia) where Tolkien describes dwarves as Jews in any way not relating purely to their language, then let's see it. There might be such a reference, but I'm asking you for a real citation.
And seriously, telling me to "do some actual reading" just makes you sound like a petulant freshman. Which you very well may be, but you should at least try to act mature and that way people may start to respect you.