What's on the page is on the page. Cansino obviously wanted Doom to affect "classical European style" painting for an audience of non-discerning comics readers for whom this qualifies as dated signifiers. Either way you can read it for what it is.
I don't think someone who on-page shows multiple acts of cruelty to artists and works of art, qualifies having Musical Intelligence. That sounds moralistic, and it is, at the same time it's also rational, which it also is. Doom's not able to fully engage with the broad spectrum of artistic taste, or enter into dialogue with the other and so on, and his need for control and power makes him unable to fully grapple with an artist's vision, or put himself under the control of an artistic work.He's more of an art collector than artist. Even then I think he does it as a status symbol to enforce the idea that he is of high rank and not just a lowly Roma. After all, he burned a Renoir that he didn't like
So Doom doesn't have Interpersonal Intelligence, Intrapersonal Intelligence, Naturalistic Intelligence, Musical Intelligence.
He would rate high on the other metrics though.