Hopefully, It's just the learning curve everyone is going through because the Baby Boomer generation is retiring. And it's time for everyone else to pick up the slack now.
Most of these airports are located based on population density and are thus very expensive places to live, requiring higher compensation levels for employees.
As the value of fiat currency drops, jobs such as these ground crew positions don't pay enough to attract talent.
...not that the third-world replacements will ever have that talent.
More likely it is unqualified DEI hires.