"Rage quitters" refers to people who get very angry or frustrated while playing a video game and abruptly leave the game or disconnect from it. Full definition
The other neat thing in this update is that Capcom has found a satisfactory way to deal with rage quitters. (toucharcade.com)
It is still unclear when Capcom will address the major issue of rage quitters in Street Fighter 5 and how to punish them, and it seems these two March updates will not tackle this problem. (segmentnext.com)
Yes — it would tank as rage quitters would ruin every fight requiring a party and the small audience that would love the challenge couldn't support such a huge endeavor. (n4g.com)