Except "cream cheese frosting" is a (delicious!) thing, most traditionally for carrot and red velvet cake. I think this incongruity is holding cream cheese frosting back, and it needs better branding. Specifically, I think we should call it "cheesecake frosting". It's essentially no-bake cheesecake already, and it's reasonably close in flavor and texture since they're both mostly cream cheese with sugar and fat.

Looking online I do see a few people talking about cheesecake frosting, and they're all using it just to mean cream cheese frosting.

On the other hand, I think whipped cream cheese on an Oreo is decent imitation of cheesecake with an Oreo crust, so I'm not sure I'm the best person to listen to here.