That's fair but still indicates shortage, no?
Not necessarily indicates any 1 thing; it can be fake job posts to signal growth, could be an extra picky hiring manager, even a decrepit company that forgot to close it.
It’s a pipeline requisition or feeder requisition. Sometimes companies will close and refresh it. Can’t rely on job listings alone
No, the exact opposite! A high percentage of ghost jobs indicates that there are very few actual jobs open in the field, which suggests an oversupply of workers.