It doesn't concern me, at least not yet. Given his incredibly high walk rate, it's probable that the K rate is due more to unnecessarily high patience, not just swinging and missing. Stanton had a similar K rate at 18 in A ball and a considerably lower, though still good, walk rate. His walk rate improved while his K rate came down as he progressed through the minors, then his K rate has sat around 27-28% for his major league career, which is similar to the K rate of both him and Davidson in A ball.
Obviously Stanton hit much better overall in A than Davidson has so far, but I'm not concerned. He probably needs to be more aggressive, but I'd rather see a guy who is walking a ton and K'ing a lot than a guy who isn't striking out much but also isn't walking. We just need to see his average come up.