I used to work with a lot of Amiga graphic artists back in the day (and heck, even now...only they are all on the PC today) and one thing that has to be pointed out here is that you need some artistic skill to begin with. Most of the brilliant artists I knew who whipped up delights on the Amiga either in DPaint (or OpalPaint, DigiView, etc.) were artists to begin with. Whilst I, on the other hand, could scarcely draw a stick man. But I had done layout and adverts since I was about 12 years old. Which gravitated me more towards DTP apps. Mind you, I used DPaint (and others) extensively just like I used Photoshop daily now. But I do touch up and technical stuff, not art.
Advertisers would like for the user to believe that the right app can make you an artist or musician, but you need those skills first, THEN you need the program that will make that seamless transition from real world to computer.