Fingerpickers, as opposed to classical players, have evolved a myriad of different styles and techniques based, usually, on what is most comfortable for the individual player.
If you're hand is relaxed and you can play with a relatively neutral wrist (some ulnar deviation is inevitable for most of us) and a strong neutral thumb then your wrist position is OK. Most of us will play with some flexion of the wrist which is not generally a problem.