I agree, it makes more sense to allow the coach to stand where they want, for how long they want etc., and the deduction should just be if they touch/spot the gymnast. The girls uneven bars high bar is high too, like the boy's high bar. Anyhow, at the same time coaches do teach gymnasts how you're supposed to fall, like roll out of the skill, etc. Falls do happen, mistakes do happen.
Like these gymnastics bloopers:
[youtube]tjNre1yI668[/youtube]
I like Chusivitina's and her coach's dancing! :D
It's kind of like Bela Karoyli's part in the At&T blueroom video,
"This is an amazing sport, because this is the sport really the one makes you better, stronger, more confident, and most importantly you know everything about yourself" - you have to know where you are in the air, etc.