Well.... Let me first say that I'm "all in" when it comes to proper coaching, good form etc. BUT
Jeezzz Louise all this business about grip/thumb/arm/elbow/string and whatever! I don't think, for a microsecond that "archery" is being "hurt" in the slightest. It's just a movie.. Maybe not a good one, but if a kid is going to get involved in archery it's likely going to be through a club or maybe even a JOAD program and it's
their they will get "the good stuff" with regard to proper form etc.....
Sometimes a frog is just a frog..... and not a prince!
Tom