Getting to hear a short concert by members of the world-class Philadelphia Orchestra? Sign me up! I know the Dvorak "American" Quartet like the back of my hand, and would have been thrilled to hear it. That finale movement is a blast and an absolute joy to play!
Also, it should be noted that this was not actually a string orchestra playing; it was only 4 people from the orchestra. (For those who were concerned about the amount of sound in a small space, it definitely wasn't the 60 or so string players that are likely part of the orchestra's string section. There just isn't room for everyone to play, even on a large long-haul sized plane.
). It might be interesting to note that when the "American" Quartet was written, works like this were considered for intimate audiences, small salon type venues. I wonder what Dvorak might have thought of his classic work being played on a plane!
Regarding the sound quality: I can tell that these are highly trained, excellent players. However, the sound quality of the video makes the first violinist's violin sound pretty tinny. It captures a lot of the instrument's higher overtones, and doesn't really grab the bass end of the spectrum. It also looks like the person recording this particular video was standing/sitting right by the first violinist. (As our recording engineer where I work says: the one closest to the mic wins.) Those little video recorders on cell phones are not meant to accurately capture the acoustic qualities of live instruments--you need really great mics for that.
So, I wouldn't judge the tone quality from this video.
In any case, you just can't please everyone, regardless of the good intentions of the quartet that was playing.