Have you ever seen "the podium stance"??? Now that looks ridiculous! At one meet there was a team that stood on the podium with their chest puffed out, head looking up, arms down at sides palms turned upwards & back. They stood this way until they were told to present. They looked as if they were waiting for a strong wind to come & lift them up & away.
I think it looks pretentious and stupid and if I were head coach none of the girls at my gym would do it.
However, I'm not the head coach (at least for the girls team) at my gym, and my girls -- much to my annoyince -- learn that march.
It's worth it just ot watch little kids do it. Most older gymnasts don't walk in an exaggerated way anyway, just a little straighter.