I just seem to keep agreeing with everything you say no matter what the post. Just recently a parent on the sideline yelled to my daughter to drop to her knee for a scoop which can and often results in the ball bouncing off of a foot or knee if not done perfectly and limits the ability to move fast for the next move. I explained that technique is not utilized with the professional goalkeepers nor does her trainer teach that. Her response was that is the first time she had ever heard that. Not sure if she was presuming I was wrong or not but I did just watch a video of the training for U17 National Team goalkeepers and her trainer is teaching her to do exactly what they do with both the scoop and frontal. You also don't see College Keepers doing it so why teach the kids to do that now to later have to break a habit? I did see one Keeper from another country use that technique in the Olympics and the ball still went through her legs. My poor daughter keeps getting taught various techniques for a variety of things which has caused her considerable confusion. I watch a lot of soccer and I have just recently decided we needed to pick a road and that road is the approach that most closely resembles what is being done in the professional world and tell whom ever is training her that is what she is going to do because the confusion is causing her to make mistakes. I am sure the folks are thrilled when I do that because I am a parent that doesn't know anything. She is finally training with 2 trainers that are teaching consistent approaches and I can see a difference in her game. US Soccer should establish some standards that should be taught based upon proven methods and put it in the training for all coaches. That wouldn't even take that long to do. There aren't that many moves with controversial methods.
The problem is that goalkeepers are an afterthought for US Soccer. As I wrote, there was nothing in the E License for the goalkeeper and very little in the D. The instructor didn't even bother to hand out a goalkeeper assignment and I brought my gloves for nothing to the exam and got reprimanded for giving the keeper instruction during a crossing exercise (so since there were no keeper exercises, and I'm not supposed to coach the keeper during other exercises, that means the keeper gets no training from the coach?) And to get your keeper license, you have to get at least a B level on your field licenses.
Even if they wanted to, though, it would be tough since there isn't an agreement internationally of what keepers should be doing. It's an oversimplication but there are 3 basic styles of keeping...the tall keeper (where the keeper basically hangs back and uses extension almost like a basketball player, but doesn't catch....he punches...it's the most common European model), the fast keeper (where the keeper charges a lot and plays out of the box like Manuel Neuer) and the big keeper (which basically is used like a fusball keeper, and best associated with the old English style). Thankfully some consensus is coming together now and Neuer's play more than anyone has contributed to showing what keepers can do, but there's always going to be some variance so it's important that keeper trainers keep up to date with all the latest techniques so they are able to apply what works for a particular keeper. The US philosophy has been, to some extent, that it doesn't need to figure this out because lots of kids grow up playing sports with hands (baseball/basketball/football) so it's easy to get keepers who convert from other sports...some have even speculated that it might lead to a new keeper format (an American one) with an emphasis on catching....but to get there we need to do a better job on training.