Why do using this hand pose in A pose cause artists maximum buthurt?

I mean, is not a pose that is not realistic, nor is anatomically wrong.

Neither causes extreme strain on the body and can be sustained as resting pose.

>>1009558 (OP)
1. The forarm is rotated outward, neutral would be more ideal. Turning the upper arm outward would make the forearm rotate less, but at the cost of rotating the upper arm outward
2. Orienting joints isn't as straight forward

It's not a big deal to be honest, beneficial in a case where the forarms will be twisted outward 99% of the time. Do what you want, general 3D is more lenient than people make it out to be

>>1009558 (OP)
oh god, you're spamming it here too
you're back, aren't you?
god fucking damn it, I thought you were dead

>>1009558 (OP)
The purpose of an A pose is not to make a good silhouette.

>>1009558 (OP)
Explain to me the advantages of such a hand pose. My first instinct is to argue against it. But I want to keep an open mind and hear you out. So why use that hand pose over others?

>>1009558 (OP)
>>1010806
https://www.youtube.com/watch?v=FXfc4Gyw6I0

>>1010818
Does that video actually touch on the hand pose, as discussed in the OP? If yes, then at what time?

>>1009558 (OP)
>in A pose
It's because the wrist, relative to the elbow, twists ~180 degrees.
This means that from the rest pose, your rig will need forearm and wrist bones that rotate 180 degrees one way, and not at all the other way.
You will have to account for this in your model's topology. Picture (or try out) what happens to a cylindrical shape when one of its ends is rotated 180 degrees.
A neutral position, meaning one where joints are at their middle positions, is much easier to work with.