Learn about how airlines treat their grouncrews.
Indeed, beeen complaining about this for years. It means that companies cannot hold onto good staff, and you get wet-behind-the-ears newbies every new season; and so we end up with numerous groundstaff with no idea about aircraft or aviation. Especially the all-important red-caps, whose average age appears to have gone from 45 to 17.
And these are all holes in the Swiss cheese, that could lead to incidents. But nobody cares.