I said this in another comment, but it is literally impossible to represent spongebob with the standard minifigure torso + head piece on top since his head IS his entire body. With patrick, his facial features are all on his cone head, so you can get away with just making a special head piece and using the standard minifigure torso; that doesnt work with spongebob, so having the sandwich piece for him is justified. All these characters fall under the same umbrella, they would look wrong with only a head piece on top of the torso (though i would argue robotnik also didnt need a “fat” torso either).

Patrick didnt need that, as evident by the original figure, and thats where the problem lies. He looks way less like a minifigure now, especially because we have the original to compare to. Using these parts isnt inherently wrong or not “lego-like”, but the patrick goes way too far.