Using Placeholders in Automation Rules - the Placeholders access data field values. Insight is rightly applying controls so that the accessing (Rule Executing) user needs to be an object scheme user to see the value.
However, if you don’t have access not only is there no value but there is no warning in the logs when set to DEBUG and in the UI itself when setting the rule.

It’d be even better if the UI presented this warning. It knows who the placeholder will be executed as.