I disagree.
One of the first tasks a child learns is how to tie a knot, i.e. I can tie my shoes. A child that is to young to tie there own shoes will likely not be old enough to remember much of anything if or when they get lost. At that age they should never be alone in the outdoors or have an opportunity to stray from camp
It is aslo likely some young ones will wander off and likely they will not have a survival kit or know what to do with one either even if they had one.
I would challenge you to tie 30 feet of surveyor's tape exactly the same way you would tie your shoes.
Young children don't necessarily adapt concepts the way adults do. This has nothing to do with how smart they are, or how well they've been taught. It is simply a developmental fact. The human brain takes time to develop and evolve. That's not an opinion...it is a fact.
Presenting a young child with a flat surface to tie (tape) when they have learned to tie a shoelace knot (that is not useful for tying long tape around objects anyway) with a small, most likely round shoelace, especially when the child is under stress from being lost, chances are the thought of even trying to use that shoelace knot to tie surveyor's tape around a tree branch, assuming someone three and a half feet tall could reach a tree branch that would make the tape visible, would not occur to the child. I'm not saying that kids aren't smart, I'm just saying that biology determines that certain types of brain functions...reasoning, logic, concrete operational, formal operational...these things take time to develop.
You can disagree all you want...diversity in opinions makes things interesting.
For me, I wouldn't base my child's visibility and recovery chances on shoe tying ability.
Maybe that's just me.