So have many cadets left in the last decade? I’d imagine turnover will be high once they are 5 years into a 10 year potential command upgrade wait.
The problem with cadets and I’ve seen this attitude as mentioned above is it’s not a career airline. This will bite in the future and they will get caught out with lack of people in the right seat because they don’t have anyone suitable left to upgrade. Or they can’t upgrade fast enough.
The ex GA guy or girl that has worked for half dozen operators in the past will probably stay longer having seen a lot, and end up in management roles.