When /If I say meaningless, it's within the context of mechanics, and how those mechanics feed into the cohesiveness of the setting.
I would argue most people when bringing up 'funny hats' are doing the same.
Appearance, within 5e D&D doesn't drive mechanics, in the way ASI, does, within the crunch.
That's all, I'm not saying its meaningless from a real world perspective.
I don't think it's necessary to remove all mechanics as related to race. As I've been arguing, I prefer a racial feat system; you can, IMO, create fantasy races with real, "biological" differences and do so in a way that is intentional and mindful when it comes to real world racism. I don't see that as necessarily inconsistent.
That being said, many aspects of the different races are already not represented or not represented well :cough:: racial ASI), and it would simplify character creation to get rid of mechanics as related to race. So I wouldn't mind, but most of the fanbase would for one reason or another, and again I don't think going to that extreme is necessary.