The Nightbird forces players to leave (console)
It feels silly to repeat it, since it has been said a hundred times.
Sweats in Nightbirds are so common that they ruin whole servers. People leave bc the miniguns and maneuverability are simply overwhelming and you can see live how lobbies are getting emptied by this, which in turn makes even more people leave.
Most people I know quit for the day or in general, due to this being a big part of ruining the fun.
Some urged me to mention the lack of properly functioning laser-targeting teamplay as a possible alleviation (which is another issue in general).
And when you're not harassed by this all the time ... well call me crazy, but it's not really pleasant to see you're team like many newer players or people who can only afford 1 or 2 rounds being absolutely dominated.