It seems that no matter how high, or low, you vault all anyone comments on is whether or not your bottom arm is collapsed. Should you care? Probably not as much as the rest of the vault community, but you should probably care about your bottom arm only as much as you care about your pole carry, running mechanics, plant, jumping mechanics, swing etc. Although I don’t think a vaulter should have a collapsed bottom arm I do not think the emphasis that the vault community puts on