well, as it wasn't a screenshot specifically to show the hat, I can't say much about it. I tried looking for something more visible, but I didn't find anyone posting screenshots with this particular hat. I will owe you a better picture
Printable View
Googling Viera and hats made me find this nice artwork:
https://pbs.twimg.com/media/EAHWAaMXsAEAKKk.jpg
Kind of a point that most, if not all, pointy wizard hats could work even with ears hidden.
Position and shape of the ears are probably some of the biggest factors to have as an excuse for not making headgear available. Male au ra in particular has some horrific clipping, but since it's on the side of the head, it can be not as bad as viera's could be. I don't really remember what the various male viera ears look like, but, like in that image, female viera have ears that go farther back on the head which would cause the clipping into the hat's brim, but they also have ears that would shoot straight up. I'm sure SE made viera ears varied and customizable due to never planning to do headgear, or hats specifically. With that hat and others they could always miniaturize it too.
I have suggested custom viera variants in the past, but I'm not sure how the community would react to that at this point. I mean, it's a pipe dream that SE would actually do viera specific variants of hats in the first place though.
did they say if they're adding more hair in 6.2 or no
If that was true, then what I feared on a prior page might be true. I will wait until an update comes out with new hair, but this would be awful if it's the case. Also, because it would mean they'd be having to make those shared hairs available later anyway (maybe even thinking that is from an optimistic point of view).
I wont trust anything about anything til patch notes drop and even then I'll still be cutscene skipping thru msq to get to IS faster to check the new Aesthetics myself since they finally deigned to add an "addenum: not usable by viera or hrothgar even though this hair dropped in shb" note to ma items.
It's probably a bigger question if new hairs will be available for hrothgar at first. Maybe, and since they are going back and adding ears, you'd think those hairs would have ears too. I wonder if they would couple viera and hrothgar together again, and just start delaying releases, if it comes to that. We will have to wait and see.
Did they ever say anything about making it possible to more easily add hrothgar ears now, or did they just show a picture of that hair with ears?