u/Helicase21

1: Boarding and unboarding are two of the most unpleasant parts of air travel, especially when connections are in play, and especially because of how long they can take

2: Boarding and unboarding are so slow in large part (not exclusively, but large part) because people are putting bags into overhead bins

3: The fewer bags that need to go in overhead bins, the faster the boarding and unboarding processes can be accomplished. Charging for overhead bin access and offering free checked bags would help reduce bags going into overhead bins

4: In general, extra charges are in place to avoid some inconvenience (boarding late, having less legroom, etc). In this case, waiting at baggage claim is an inconvenience to avoid while being able to walk straight to the airport exit from the plane is the inconvenience being avoided

5: People who still feel the need to put a bag in the overhead bin could just pay the extra fee, the way people currently do to check their bags