People who don’t write their own songs are STILL ARTISTS. That’s like saying an actor isn’t a performing artist unless they write their own scripts. Or like saying a painter isn’t an artist if they paint something commissioned or based on something they’re already looking at in front of them. For all you people who say someone sucks because they don’t write their own songs and don’t deserve to be successful, I ask you to look at your favorite movies, your favorite TV shows, your favorite actors, and say, “They suck and don’t deserve to be successful because they don’t write their own stuff.” Go to the damn Louvre, take a look at the Mona Lisa, and say, “Leonardo da Vinci sucked because he didn’t think of that painting on his own. He was just copying the scene in front of him.” Obviously that’s absurd.
"Artist" and "Songwriter" are not the same thing. They are two different roles, and while both can occur at the same time, they also can exist independently.