Opportunity Marketplace - Interests - What happens if none are selected?

Summary:

We would like to know what happens if the worker opts-in to receive Alerts, but does not have any specific interests selected

Content (required):

As part of the Opportunity Marketplace, if a worker does not select anything in the Organisation, Job Families, or Job fields, but elects to receive Notifications, do they simply get notified around ALL new Opportunities?

The reason for asking this question is: This behaviour is different to the existing "Current Jobs" tile, where the worker needs to make a selection for one of the fields in order to receive updates.

Hence interested in knowing what will happen once we shift to the Opportunity Marketplace and the worker does not make any specific selections in the Interests tile.