They do have more neuroplasticity. But we have to define what that means and where this phenomenon comes from. Most just assume that younger equals better. This is not the case. You can even keep the neuroplasticity you have had as a child. One of the defining characteristics of neuroplasticity is the ability to adapt to new views. Since children have no views yet, they have no conflicting views either, causing acceptance. This is not the case with adults. But you can instrumentalize such knowledge to essentially undo your conflicting nature to increase neuroplasticity immensely. There is a cutoff and you will have a drop in potential for neuroplasticity as you age, but this is not in your child years. If you’re interested, I remember reading a study of life-long meditation on alzheimers. Maybe you can find them again. This is just one technique to increase neuroplasticity. I didn’t want to mention this part, as it is against common knowledge. But common knowledge is rarely correct.

Source: I have had to deal with significant loss of neural function through mental illness and have read up a lot about this topic to better myself.