take, n. The word take can mean “attitude toward, opinion on, interpretation of.” Surprisingly, this rather common sense is not in the OED. Often found in combination with on, as in one’s take on X, it dates to at least 1989.
You’ve confused me a bit. I thought you were taking these dates from the OED.
BTW, I smiled at your use of the phrase “adult child”. Perfectly normal, of course, but fun could be had with the ambiguity, as child means either “offspring” or “very young person”. Some of those boomerang babies probably are child-adults.