Anyone who writes for a living is a writer, I believe. Sometimes I wonder, however, how much of my job is really writing and how much is marketing? Most of what I do as a web writer is work for hire- someone tells me how long the work should be and what it will be about. Sometimes I cam given keywords to add, and more often than not I am given a title. So, when I put it all together, can that be considered writing or marketing? After careful consideration, I have come to the conclusion that it's writing. I am not a marketer by trade, and yes, writing strictly-defined articles can be considered creative writing.
What you write, even if you are given a very detailed guide about what to write, is extremely colored by your own skill and attitude. You can make anything funny, sad, sympathetic or straightforward and unbiased. The particular path you take is a footprint you leave behind. Sometimes I think that having to work within such tight constraints and still being able to make the material alive and interesting is a harder creative process than writing whatever the heck you want.
I need writing jobs to turn to for money, and I do consider them to be creative writing in their own way. However, once in a while the need to strike out in my own creative direction hits me and I have to follow where it leads.