More cargo being carried (upgraded cargo dragon has more room) so doesn't have as much margin is what I remember hearing as the reason. This launch also includes an airlock in the trunk.
Highly recommended you tune in or watch the replay at about 15 minutes to waypoint 0. The views from the station with the clouds as the sun rose were something else!
Oh, they also showed the upcoming holiday menu. This may be just me, but I really wonder what "Sparkle Gel" is...:
Different view of the launch from a drone: https://twitter.com/spacex/status/1335767256526045186?fbclid=IwAR2Nm_QKKeFpEeaKe2YZtjYFoY1akAjYu3Ehxz-YYc6FSjMcsKAsxRwFDB4
Time-lapse of the approach and docking from Dragon’s POV: https://twitter.com/SpaceX/status/1336349048534528001
Referencing the horizon, a quick calculation shows the CRS-1 F9 took 20 seconds to reach the same altitude as the drone, approximately 1 kilometer (3,280 ft.). Some small pricier drones are capable of flying well over 10 thousand feet. Without an FAA waiver drones are generally limited to flying below 400 ft. above ground level or over/around any manmade structures. This 2 year old article with video from Brownsville notes the penalties for anyone considering drone photography during Starship testing. No Drone Zone
https://www.nasa.gov/press-release/nasa-to-air-departure-of-upgraded-spacex-cargo-dragon-from-space-station