Why do you have to be a coach/judge qualification to question whether a vault or bar routine is unsafe? Clearly safety is an overall issue on vault or else USAG wouldn't have new guidelines for vaults (which I thought were gradually being implemented across the highest levels?).
Just because a kid qualified to compete at a certain level doesn't mean she will safely have all requirements for the level. I'm not talking about the crashes and splitting the beam and the 'normal' stuff that happens (which fortunately always look very scary with no resulting injury). There are usually clues in the kid's form that giveaway that she/he may not be ready for the skill. The kid who doesn't hit a single giant in warm up but has decent form overall is more likely to be dealing with nerves or a just bad day. The kid who doesn't hit a single giant and struggles with poor form and other elements are the ones that scare me.
@meganliz77 referenced scary FHS. We are in the same state and I've seen some of those. A handful of those with a scary FHS will end up in L8 and not be adequately prepared for the flipping vault. I don't know WHY it happens but it sure makes me thankful for the years of drills that DD has been working on so that when it does come time for her to compete a flipping vault she won't still training it the day she competes it.
Which is why they changed the vault rules for L8 this past August, to try to prevent L8 kids from attempting scary and unsafe flipping vaults! We had a few L8s this season with beautiful flipping vaults, and a few others who have solid L8 skills on all other events, but competed a FHS vault with the 9.0SV until their flipping faults were competition ready.
Regarding the OP, its ultimately the coaches' responsibility to make sure their gymnasts are competing skills at their level safely and proficiently. I would imagine the majority of coaches want their gymnasts to 1) not get hurt and 2) perform well at meets since they are representing that gym. What happens at one meet, in one routine, is just a snapshot of that gymnast's abilities though. I watched a gymnast at one meet who looked like she couldn't walk a straight line on a beam - it was scary. It turns out she was getting over some ear thing and was suddenly really dizzy. Who knew?! She ended her season scoring mid 9s on beam but you'd never guess watching her at that one meet.