I think it fairs quite well, we can argue over the quality of the training or the individual Aikidoka's personal ability to execute but randori against multiple attackers has its merits, even if it isn't done "right" at full speed. To be able to deal with multiple opponents you need to drill against multiple people trying to maneuver on you and by learning how your movement can effect their movement. People do have the tendency to stack up or come forward one at a time or to hesitate behind their friends and all of that behavior can be exploited provided you know how to read the body language, movement, etc. While you may not appreciate it, no one else really does this and some drilling is still better than none. We used to simply do evasion drills quite a bit when I was learning and the teacher would sometimes randomly toss in a training blade or escrima stick to spice things up or just up the ante. Training against one person and not with multiple people leads to tunnel vision, where even the relatively "low quality" version of randori practiced by many of these Aikido schools is still going to add to the persons situational awareness and movement.
As much as this guy attributed his kote gaishi takedown here to his time as a bouncer, all of the technique he displays here, his movement, his positioning and manipulation of the other attackers and his ability to peel the guy off and keep from getting surrounded are all 100% textbook Aikido.