Then you need to delete any Tauren/Gnomes/Blood Elves/Darkspear/Draenei/Lightforged/Void Elves/Orcs/Highmountain/Nightborne/Humans/Pandaren and now Night Elves since player populations are already larger than them lorewise.
Except that’s already written that way. Again, playability doesn’t somehow retroactively change the story.
If you feel what the Blood Elves did might have been evil then that’s what you think already.
And how exactly would that happen?
You think Blizzard is going to go back and change the Purge of Dalaran or that they didn’t return when needed after the Scourge or write that they only did it because they where jerks and felt like it?
Once again, it is already written. If you think what the Blood Elves are evil because of that then it’s your problem.
Having another race that doesn’t agree with your practise doesn’t suddenly make your character evil, it makes conflict in the story.
Otherwise Blood Elves would already be considered evil because the Night Elves, their direct cousins, already viewed them that way along with the Void Elves who didn’t agree with being a part of the Horde.