While folks will still find ways to be rude and trashy, it does greatly minimize the amount of toxic chat. You can report people for harassment and spamming the chat, simple as that. Don't get so invested in someone who clearly can't keep their head in the game and is too focused on being an ass.

While I was learning PVP a few seasons back nearly every match had someone chew me out whenever I made a mistake, no helpful/constructive criticism what so ever. This toxicity can turn many new and wanting to learn players away.