Why are people allowed to troll/throw/grief random BG with no consequence?

you can post the whole picture or the person who gave you that picture since its me my mw monk is full 437s now its an epic bg not a random bg its not hindering the team that much she snow my 7th alt to be pvp geared meanwhile you are still lvl 50 and i quote . its funny how youll post pics of my monk wearing a whole 2 green pieces and not the full armory i was about fully pvp geared that wintergrasp .