Originally Posted by
shadesofgrey1x
The answer is simple. For many years all miles flown or not counted toward DL MM status. When the change was made there were many MMrs who got there through credit card, hotel, dining bonuses etc. UA on the other hand has always been MM via BIS only.
And just like FCM, Delta changed the rules and it hurt loyal people who fly Delta jets the most...
..and make no mistake, the pot at the end of a rainbow is a very core part of customer rentention...