Many still don't seem to know what snap shooting, as defined in earlier times, is. That is the shooting process of releasing as soon as the anchor point is reached. It does not equate with target panic. Of course, a snap shooter can develop target panic, but the quick release is not the cause. Snap shooting as a definition of a form of target panic is a newer usage of this term.
As stated numerous times, Hill and many other great archers were snap shooters, but their form was quite good. If you are shooting accurately and under control, you do not have target panic. If that is the case, do not pay attention to your critics. Unfortunately, many well meaning people speak eloquently and vociferously about that which they do not know. Just as long as you are consistently hitting the mark, all is well.