If it's work-induced I think a separate label helps the discussion.

> Should we stop calling it burnout and just say depression ?

No, burnout is a completely different thing from depression.

While the two can often overlap, they are not the same.

See: https://www.mind-body-health.net/index.shtml

I've seen the term "moral injury" be used, which I think is a better description of what usually happens.

Symptoms vs. etiology.

The bully capitalism, squeezing every last drop of of a "human resource".