>It's not legitimate, otherwise you'd take 100% paid time off, get a second job, and collect two paychecks in perpetuity.

This is not a great argument. Unlimited just means there isn't a pre-defined limit, not that every amount has to be approved.

Do you think there's unlimited amounts of money in the world? If yes, then by definition it's worthless (also, can I have a trillion dollars an hour?). If no, then what's the maximum amount of money?