I think a lot of this so called toxicity comes from the perspective of players who were welcomed to the game with open arms, never needed to learn or do anything for themselves, and were never given a challenge by the game that required them to read their tooltips.

Then they get higher and higher in levels, and it becomes less cute that the dps isn't using aoe or the healer is spamming physick-- even if that player never needed to before.

They have fond memories of the early game, but the more they do the more they run into "toxic" people -- nevermind the toxic one is the person that didn't read their tooltips.

I suppose that means it's working. People can progress too far, but they'll feel unwelcome if they don't have anything to offer.