The same way you don't like people doing those things because its not like the way you think the game is intent to be played, those people have they own way to play and may not like to be forced into doing what you think it is right, even though i don't agree with these kind of players having their own way in the game, for me i just start a game assuming im playing solo until my team mates prove me wrong it is the best way to avoid getting frustrated, if they die fast i try to revive, if they just dc right after, it doesn't matter at all.
And also being outnumbered not always mean you can't kill a whole squad solo.
