Arondir has no agency of his own. He appears where it's convenient for him to appear. He disappears where it's convenient for him to disappear. He's spared when it's convenient for him to be spared and again shows up where it's convenient for him to appear. The cycle continues.
So far his whole storyline is suffering discrimination at the hands of some human villagers and behaving like an elf tumbleweed.
No qualms about the actor's portrayal of the character. But it's just terrible writing.