I guess I haven't seen the imagery op mentioned portrayed with stacking blocks. I was picturing toy cars or action figures because that's what I've thought I've seen. Or maybe that one toy with the shapes you are supposed to fit. I retract what I said if I'm way off.
But, one of the worst things about how autism has been studied is that it's been from the viewpoint of there being proper intended ways of doing all kinds of things. It totally IS stupid, I never defend that. But that's how science from normative society tends to work. They have traditionally diagnosed us based on things they arbitrarily see as dysfunctional instead of what actually impairs quality of life.
But it kind of sounds like you maybe disagree with the premise of this thread? If so then why are you asking me? I was just weighing in with the way I may have noticed what OP is talking about