Labeled HasStep and Neo4jGraphStep and full graph scan

Neo4jGraphStepStrategy.apply only applies to steps where TraversalHelper.isLabeled(currentStep) is false.

For queries of the form g.V().has(T.label, "Person").as("person").out()... Neo4jGraphStep will not use the label and do a full graph scan.

It works if I just remove the TraversalHelper.isLabeled(currentStep) however I do not know why the check is there in the first place?