I think that some people are reading posts that weren't made.
I don't see anything like what happens on the WDW threads about putting bundled up socks or anything like that. I see people making choices in shoes, shoes the kid already has. One pair of shoes no dice, another pair of shoes OK. I think y'all are reading things that we, I, aren't saying.
I am taking this personally, I admit, but I also said that I am all for ride safety. Go back, read it, I said it! I didn't say this, but I also think that they should measure kids while in the position for the ride. I can't possibly believe that leg length has all that much to do with how a harness or belt fits, therefore, I believe they should have you sitting and make sure your shoulders come to a certain height, and head if a headrest is important. As it stands, if there's a ride where a harness is important, one would think that the torso should come to a certain height. Well, take me and my stepmom. I'm 5'3" and she's 5'10" or 11". But if we get our waists at the same level, we're the same height, almost exactly. ALL of her height is in her freakishly long legs (I'm jealous, actually, even though she has to pay extra for Levi's that fit her leg length). But if we were being measured from the ground, we're significantly different. So if the restraint is the important thing, not the dangling legs, I think kids should be measured sitting.
I also wasn't there when DS had the piece of paper inserted above his head. Now let's picture a 3 year old, and a grownup is TRYING to put something above his head. Maybe there are surly kids out there, but my guy wants you to be happy, so I'm quite sure he ducked down a bit to let the adult do what s/he needed to do. CM wanted a piece of paper there, CM got a piece of paper there. All he needed to do was stand up as straight as he had stood up outside and he would have been fine (meanwhile a tiny girl walked by). DH didn't argue, but he did wish that the tiny girl had been told to leave too! We're all about fairness, and that was not fair.
Being a (retired) chiropractor I know very well that as the day goes on, we get shorter unless we have an extremely healthy, resilient, spine. The fluid in each disc compresses as the day, and gravity, wear on, which then causes our spines to be shorter. Now I still think that the beginning vs end of the line thing is just plain old slouching, unless the CM let something slide at the front knowing that the person on the inside of the line would catch 'em. But I made sure that when we went to Star Tours in December, we made it the first ride, so that he was at his tallest.
And then he slid down down down, just like the woman said the younger ones would do.

They really do need that loop thing like on Soarin'.