@ blubak and Bootstrap1.
Someone worked out that there was about 5,000 years of engineering experience walked out the door.
Some were champing at the bit trying to get out with a show bag, plenty had had enough of the disingenuous negotiations, "under payment" reviews and constant cutting.
An EBA years out of date, a pay grade system that was utterly broken with nobody left to actually supervise it.
Having spoken to a good number of former colleagues many wish they too could have walked.