You are just a directory user with limited rights like viewing the entire directory and getting basic details of the specific community member.
The member directory is a repository of all the community member’s profiles. It’s a quick and easy way to get full information regarding any other community member within minutes. However, the condition is, that the member profile you wish to view must be ‘public’ and visible to all from their end. If the respective member has used ‘Hide’ in their privacy settings, you may not be able to view their profile. Isn’t it simple, useful & amazing at the same time?