I would really rather play 5v6 than wait 2 minutes. A lot of people do not have the time to spend half their playing time in pre game lobby waiting for the perfect match up, just because they cant wait does not mean they are immature they just sometimes dont have as much time as you.
Often times when games DO start uneven in H4 players are already joining in by the time I take a few steps. Not always though the JIS still needs tweaking though, but what else doesnt.