That may be true. However, that's not the reason for the policy change. Were that the reason for the policy change, DL would have simply charged the fee for any change to origin/destination and/or redeposit, all the time, with perhaps a grace period (change within X days of purchase and/or at least X days from travel). Charge the fee all the time - no two freebies - but no fee for changes with the same origin destination. It is the blatantly obvious solution that fixes the claimed problem while preserving a good deal of the value of the benefit for the travelers. It is so obvious it took me literally 10 seconds to come up with it. And DL would then have obviously and accurately communicated the change.

But as we know, that's not what DL did. First they just stuck a fee on there for ALL changes no matter what, and they announced it in the middle of a marketing email. When there was considerable backlash, they adopted a two-free-changes policy, but never actually communicated in detail how that would work. Changes to two reservations? Changes to two tickets? Two changes even if to the same reservation? It's months later and I think we STILL don't have a clear answer on that issue.