Pilot did the right thing.
You have an obligation to protect passengers.
Devils advocate: imagine the video shows the alteration, but the pilot glibly passing by then the brawling women fall on and injure an innocent toddler standing in the jetway.
Or the video shows the pilot looking on while one of the brawlers is choked to death.
I'm proud this guy works for Delta. These are confusing times.
What we do need going forward is a plan to deal with the combination of entitled, billegerent passengers and ubiquitous video without context.
Might be time to leave full airplanes at the gate with the explanation that tying the hands of airline employees to govern the situation makes it impossible for us to operate with even one uncooperative passenger.