The entire sport is about natural genetics and physical conditioning, though, not just carriage and posture. Maintaining good posture and body-positions require long-term physical and mental discipline as in other technical aspects in skating.
I’m just stating natural posture and carriage can and might very. I’ve seen several skaters being taught the exact same strides/techniques who look night and day. People walk differently and differences like how long the legs are, curve of spine, shape of hips, height, etc... can create nuances from one skater to the next.
I’m saying I don’t think as a judge I’d spend much time on that stuff. Some of my favorite skaters are “crouchers”. It’s ok if they can get the job done