There's a special kind of fear-mongering you see in certain circles that always gets my goat. It goes something like this: "[some new behavior that people are suspicious of] has been shown to make detectable changes to the brain!" The implication of this is that the new behavior must be bad because it alters the brain from some perceived pure or natural state.
Is there other language we can use when talking about experience leading to changes in the brain? Yes, yes there is. It's very simple. It's called learning. (Next time you read one of those fear-mongering statements, replace "changes to the brain" with "learning" and see if it sounds so scary.)
If you are serious about user-centered design, then you should be investing in the brains of your product team by giving them the experience of talking directly to your end users.