Not case in point. Whether you make your own site is completely orthogonal to whether you have backups. There are people that use blogger or wordpress for free and back it up, and there are people that pay for hosting or servers to host customized websites and don't back them up.
You're right, I guess. I suppose I worded it poorly. I really just meant that if you're going to be a "web artist" you should probably be a bit more web savvy in general. Make your own site, learn about backing up, etc.