Right, so there is a characteristic other than computational substrate that allows us to differentiate between systems that have this ability and those that don

Right, so there is a characteristic other than computational substrate that allows us to differentiate between systems that have this ability and those that don't. Say we apply the diagnostic criteria of William's syndrome to language models and deduce that they meet the criteria for diagnosis, then the diagnostic itself ie: the test results are the grounding for the conclusion not the computational substrate. In that way the discussion surrounding the computation substrate is a red herring or at the very least a unclear and roundabout way of grouping of the characteristic we're actually interesting in.