I’ve noticed that criteria like “is Empty”, “is Not Empty”, or “Contains” , “greater than/less than, …” are not available in view rules. I am wondering if there is a special reason for this or if that is something that will be coming in future releases.
I think some of those criteria, e.g. “is Empty” can be helpful to show/hide views that might be needed at initial creation and not needed at other stages of the entity workflow.