I think you can say that about all his recent art in general. That it's pretty but lacks some emotion, like you said with the Dio sketch. That's why I'm not a big fan of Araki's new style and much prefer his older art.
Anon I think it works well for Jojolion, the style there’s just so exquisite to look at but at the same time Araki can still communicate action/emotion when it’s called for by mixing up those technically-detailed “new-style” panels with more kinetic, shorthand stuff.
But yeah, for me it’s when he draws his older characters, especially when it’s cover art or a standalone piece. Although I almost always appreciate new Dios in any style.