Mad and aggressive doesn't describe actual physical, stout and muscular does describe their physical appearance. Being mad/aggressive is simply how they would come across in personality. If all the males are viewed as mad/aggressive then all of them should have that specific body language where when they idle - they should come across as aggressive. When they emote; they should also be aggressive. We can't forget that their dominant personalities are what will form the basis of their emotes.
The issue with Xaela females is that they got thoroughly done dirty and had to share emotes/stance with the Raen who are not aggressive. If it was just Xaela I would bet my cup of coffee that they wouldn't be so cute. Think of fHighlander where when they idle they're usually in some sort of 'power stance'.
In regards to ff12; I can go through that quest and double-check. What is said, might take me a week or more since FF12 hasn't been first and foremost in my mind. It will be on my switch - so i'll try my best to make the images presentable. If they don't say anything I'll be sure to say that nothing has been said. I'm playing the Zodiac version, which was originally Japanese only. So hopefully the translation was smooth come across. I can try to switch it to Japanese voices and hope that the translation in the subtitles is the one we're looking for.
The Ultimana book seems to be a bit conflicting - because the Vii males we came across aren't seen as aggressive. We know that one of them intervened to save a Vii female but ran away when he saw us, not wanting to get involved. Another was talked about in regards to his daughter daydreaming about him. But she only really said 'Papa* is that you?' In some form or fashion.
Viera males in FF14 aren't described as 'mad' either - but they are described as extremely cold-blooded, and not someone you want to come across. Hence my argument that mad just means they come across as aggressive. They will kill you, and it doesn't matter what your reasons are for being in their territory. They're worse than Xaela in that. Xaela at least allow for trade and accept other races into their clans. Some of them are seen as extremely derpy as well. Even Magnai is seen as a bit of a joke. Viera males, while we haven't seen any of that. The imagery is built up that they are perhaps one of the most aggressive 'males' in the FF world. I haven't seen a humanoid race in FF14 that as described as harshly as the Viera males are actually in-game.
Edit; for those wondering what I mean why the males are 'aggressive' here's a snippet from FF14 lore regarding the 24 man in Ivalice.
'As I explained before, the duty of a male Viera─a Wood-warder─is to see that their tribe’s demesne remain untouched by the destructive whims of outsiders. Yet, they do so from the shadows, oft choosing to shoot first, and not even bother with questions. '
Here is the rest of the lore dump jhere. As you can see, the life of a Viera male is pretty intense.




