I'm not sure why people are still shocked every time it happens. Annoyed sure, but it's known by now that viera and hrothgar canxt use normal hairstyles.

The reasoning is technical. Viera and hroth hair uses a different slot than other races do for hair. They use the same slot as the legacy tattoo (this was discovered when people started making mods to remove the tattoo on viera/hroth, it made their hair disappear).

I have absolutely no idea why they did this, but they did. Short of a technical overhaul with Endwalker or a future expansion, this is how it's going to be for the forseeable future. So be annoyed and be angry about it.

But stop being surprised. It's how it's gonna be for the forseeable future.