>>12746352It depends. a lot of really good artists refuse to put their name on a picture or put a watermark in an area where it can't easily be removed.
These artists are known by the quality of their work, and their works can't actually be stolen since the sources is always coming out with something new whereas the copycat can't create equal art.
On top of this, these artists may make pictures they don't want to be attached to and because of their lacking tracer, can eventually abandon it as they get better.