Yet it is the only standard we have. The fact you need to come up with such a ridiculous example shows that you know that his character doesn't go against lore because there is no real character in lore. And yes your example does contradict lore because we know that machine guns didn't exist in Tolkien's world. It is strange how much you care about Tolkien yet can't actually apply a well reasoned discussion of his lore and characters.
All you look for is the shock value and an echo chamber of hate. The moment you are met with someone that doesn't support your hate you can't handle it.
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The elves were foolish and Tolkien established this. It is why not every elf was trusting of Annatar and his gifts. Your zeal to attack the show blinds you to Tolkien's own writing.
Taking it to the absurd doesn't actually give you an argument. Most of Tolkien's work is filled with maybes and potential as that is what anything he didn't publish while alive is. Maybes and Potentials that were finished by his son or the estate. We have examples of things he wanted to change and since the seeds for doubt already existed with the Elves he easily could have embellished those feelings more in the context of his other changes. We even have examples of his son saying changes he made to his fathers work was a mistake (the parentage of Gil-Galad for example).
The Tolkien Estate had a seat at the "creative table" and could veto things. The Elves taking the rings from a random stranger is foolish. It is amusing you bring up "not in accordance with Tolkien's ideals" when that is exactly what the estate thought of Jackson's work. It is strange how often people use that phrase to disparrage the show while also praising the Jackson work.
It is amusing how you defeat your own argument because none of what you just said applies to the show. It doesn't require the real world in order to function at all and can stand on its own. Also if you are a Tolkien fan you would know that his world functions based on Christian ideals. His god is a reflection of the Christian god. It really is core to the rules and laws of his world.
I didn't write what you quoted but you really think they wanted to make Sauron into a meth dealer? Because that is the only thing "modern" about Walter White. A relatable bad guy isn't anything new to our world. It is them saying what they used as inspiration for the character. It is crazy how much you, and others, use these quotes to attack the show when you display ignorance of what they are really saying. It shows how shallow you all search for insults.