I would argue most people in a organization actually are fungible, especially the more junior they are. At least in software.

It's not a coincidence that conversations around the number of engineers/designers required for a project commonly end up referring to them as 'resources' in most companies.

Since algorithm interviews are the current norm for filtering, there are a huge swathes of people who are just as good at beating such interviews but never got the chance due to their location.