Darkspear trolls are not Amani trolls. No Horde race qualifies as mortal enemies of the blood elves. Know your lore.
Prove it.
You cannot. Because he did not.
At that point, he was the ruler and therefore within his rights. Given that she was a danger to the Sunwell and that she gave aid to the actual enemies of Silvermoon, his ruling here was just.
None have contested Lor’themar’s rule. None are even positioned to contest it. The high elves were cast out. the void elves are cast out, and neither has a person with a rightful claim to the throne. Claiming Alleria has some claim is made up headcanon; she’s a noble, sure, but not the only noble and not in any special privileged position to claim the throne.
You’re misusing the word “contest”. Know your lore and your language.
Poor troll is poor.