That's true, but if you parameterize enough variables and generate enough combinations, you'll eventually find a result with great design. For a non-designer like myself who might want a neat logo on a software project I'm working on, randomly generating stuff like this and picking the best one is something I'd try before opening up Illustrator or hiring someone.

I think the main problem with this service is that the parameters are probably pretty simple and it's gonna mostly output generic patterns.