No, I understand it fine. My mistake was in presuming that you were attempting to find a victory in the minds of other people, to argue that they would have to accept your Void Elf as a High Elf under certain circumstances. Now that you've made clear what you really mean is simply a fantasy they will tell themselves , I find it's a victory I can live with. Like the one many people have imagined themselves during their childhood, of scoring the winning goal for your country in a world cup final. It's one devoid of genuine meaning and substance given how contrary such a fantasy is to the reality of void elf, but merely harmless make believe that has to deal with entropic embrace proccing every minute or so.
As for Shakana's picture, that's a fan-edit. And hairstyles have been shared before between races, so as an example it's fairly meaningless.
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The only thing shown in game is that the high elves operate mostly within Dalaran where they have had a long term presence and only occasionally do they venture into Stormwind. You cannot say for sure that the entire Alliance now views a group they will have had barely any interaction with in a positive light.
Even if they had managed to overcome that mistrust, the Alliance population has fresh reasons to mistrust the Void Elves given their dabbling with dangerous, forbidden magics.