Yes most airlines have eliminated change fees, and rebooking isn't too difficult for business travelers. But that's not a refund, and people booking 6 to 12 months out tend to be families going on vacation or to a specific event. So if something changes, there isn't always something else to book, or at least not on that specific airline. Further, what you call "moderate" status - the lowest level - has been raised to require an enormous amount of spending on any one of the major airlines. And don't get me started with "you only need to spend 100k on their credit card..."