I think of it as 3D art, And really good, at that. A vehicle or figure doesn't necassarily make it a dio for me. To me, a dio or vignette is a scene, and these project of your's evoke a feeling in me. That's art. The detail is so well done that it fools my eye, and I picture a scene. I come up with my own story. A crushed can is enough for me.
They are dios in my book. Argue and debate that until we're all blue-faced, but anbody who says you're wrong thinks much too highly of their own opinion.
Steve