Not at all: Prducing art is a self rewarding  activity based primarily upon our own assessment that we have done well. That might well produce a neurochemical response that produces the sensation of pleasure e.g. endorphins that encourages futher art from us and stimulates us to improve but art is generally considered to be a positive and productive form of behaviour. An obsessive person or someone with other mental health problems ie. Dadd or Van Gough may also produce art but not all artists are such.

Generally addictions are dysfunctional and require an external input to our systems, whether they stimulate an endorphine response in the form of computer games or other substance abuse