Why some players do this?
I just had a match with a certain Jaina. From the very start of the match she was going rogue, never joining team etc. So we also started avoiding teamfights because 4 vs 5 is an easy lose. So none of our objectives have been done, because we couldnt contest them 4 vs 5.
And then she wakes up and starts blaming our tank why he's not initiating. What was he supposed to initiate? A lost battle 4 vs 5? And later when she joined the team, he did initiated the fight... and she never even dismounted, just kept running in circles till he died. And yes, it was on purpose because she even wrote "oopsie" to mock him. So Stitches started completely ignoring teamfights, because she was trolling him.
Like... whats the strategy here? Does somebody REALLY thinks it'll make them win more games? Because let me tell you - no, it doesnt. She ruined the entire (winnable) match because of her spite.