We just look at different things and have different ideas of what makes a race interesting. To me genasi are just "let's through things in a blender and see what comes out". They don't represent anything, they just happen to be a rando combination. My campaign doesn't need an ambassador to the djinn any more than they need a half dwarf or half dragonborn. As I said earlier, the fact that some people think gnomes and halflings are effectively the same shows how we think about races completely different. That's fine.
I think that one of the strengths (and for some, weaknesses) of D&D is that it's a big tent. So, as I said before, it's okay to agree to disagree. Sometimes it's the most reasonable response of all.