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.
if the listings are open for the reasons OP stated, then yes it does indicate a shortage. if companies hired all the SWEs they wanted they wouldn't still have the listings
if the listings are open for the reasons OP stated, then yes it does indicate a shortage. if companies hired all the SWEs they wanted they wouldn't still have the listings