Quiet quitting is not a long-term strategy for individual success. But AIG is the poster child company for this term.
When you have a culture that is built around nepotism for career advancement and your employees are not rewarded in a system the proclaims itself "pay for performance", then you foster a system of mediocrity. When your leaders reward themselves with multi-million-dollar salaries and bonuses and your average employee is given 2%, you get a 2% effort from your employees.
When you choose short term expense reduction (outsourcing and layoffs) instead of valuing tenure you lose employee loyalty. You lose employee motivation. You lose good employees.
Those who remain are basically contract workers with no vested interest in how the company performs because they never benefit from any success within the company. It is simply a paycheck and benefits in exchange for the minimum amount of work that needs to be done. Just like working at a fast food restaurant, mostly any government position or a seasonal employee at Walmart who is brought in for the holidays, you do this and you get $, period.
AIG has done this to itself, so it is hard to blame employees when they say they have had enough. Again, you have to be strategic in moving yourself forward while doing the bare minimum, but you owe AIG nothing at this point so you must do whatever is necessary to advance your career outside of AIG. Good luck.