And that makes perfect sense.
Now, let's suppose YOU have a lucrative contract as the head of lets say... a McDonalds (stab in the dark). After one year, you are unhappy with the working conditions at this McDonald's for real or imagined reasons (does it really matter?). This is 1 of only 32 MacDonald's, so you make a lot of money. As an incentive for accepting this position, your contract includes a $4 million opt out clause without it ever counting as an offset against future salary. Are you a "quitter" if you exercise that option? If you still answer yes, are you still a quitter if one year after opting out, you made a salary on top of the 4 million option and you are offered an even higher paying job at another McDonald's?
If your answer is still yes, you are probably kidding yourself.