So if you quit your job, the company...

A) will be irreparably harmed and have to cease operations.

B) will hire a replacement and be fine.

(Hint: It's B)

As my Dad always said, the graveyards are full of indispensable people :)

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.

Someone decided to drink the kool-aid the PM is selling. While business is business and we are not family. We are deeply human, don't ever refer to people as a resource if you want a more healthy working environment.. that goes for any industry or company.