The video above is an enlightening watch. As I viewed it, I had a number of flashbacks to my own childhood. I traveled in religious circles and attended a school where being "slain in the Spirit", as shown here, was very normal.
The expressions on the faces of the children are so telling - Is this what I am supposed to do? Am I supposed to fall? Is that what you want? Should I be scared?
You can see which children have not yet been brought into the culture and which ones know the game.
And it is a game. It has rules and rewards. You can play it well and you can play it poorly. Acceptance and popularity within the community are determined according to your participation. Whatever one's flavor of religion, you are often instructed from your youngest age how to navigate the culture of your religious community. There are behaviors and rituals which will give you words and looks of affirmation if you partake. There are also ideas and practices which solicit community dismay.
This can sound nefarious, but I don't think that is necessarily so. Impressionable children accept these things because the community encourages it... but likewise, the community received the same directives when they were children... and so on... and so on.
I do think parents can instruct their children without indoctrinating them. Parents can present information impartially and teach their children to make reasonable judgements. However, it takes a lot of intentionality.