When you said "meat and produce departments", I assumed that you meant the actual departments (i.e. in the store). The stores I shop at only show metric. Some flyers (possibly many) do show both.
However, that still doesn't suggest that the metric system is more confusing that the imperial system (as per your post - "There is nothing MORE confusing than the metric system"). The imperial system, in and of itself, leads to confusion (e.g. oz. being both a volume and weight measure). The metric system does not.