[Mithalwen]

I didn't say otherwise. In fact I explicitly stated they had dual ethnicity but they have full rights and obligations if citizenship. Similarly while Tolkien states that the half elven had physical traits of both races, it doesn't mean that Elrond and Elros having made their choice cannot be regarded as part of their chosen people.

I agree it is a bit harsh on Dior given he was raised Elvish but the evidence of. His and Elwing's swift maturity rather points at him being regarded as mortal.