"but the "pseudonymous artists" bit seems like a pointless distraction." I think what matters here is motive. RDJ used/s pseudonyms to suit an artistic purpose

"but the "pseudonymous artists" bit seems like a pointless distraction." I think what matters here is motive. RDJ used/s pseudonyms to suit an artistic purpose not unlike what Fernando Pessoa did with his heteronyms in literature a century ago. What's happening here looks less like artistic license and more like marketecture designed to game DSPs for streams.