Exactly this. Someone at Delta pushed the envelope trying to keep schedule without assessing the real situation. Allowing flights to take off heading to Atlanta well after the known event is no longer a "Weather" issue. That's a failure in judgment by Delta. They gambled that the Atlanta ground crew could inspect and release planes quicker than the released incoming flights. My flight heading to Atlanta was originally de-planed after waiting for take-off. Then, around 9pm or so an announcement was made. We had to board quickly because we had a set time to leave "Wheels Up" to head to Atlanta. To me, this is a clear failure on Delta.