I'm a smurf. I'm only smurfing to teach a friend the game. Low level play is notoriously toxic and my friend was debating on quitting. So I came down to teach him and quell some of the toxicity in his games. And I handicapped myself by playing the weakest role (support), on the weakest champions in the game and I named myself in such a way to make it obvious that I was a smurf.
I know smurf players aren't welcomed in most cases but I think that I am one of the good ones. I went down with good intentions and even if I got fed it's not like I was in a position to take objectives down. All I did was put my team in an easier situation so they could win the game for themselves. They still had to work for the win.
But not all smurf players are like me. Most come down just to smash mouth the new players just to make themselves feel good. And then they berate and taunt the new players too. Those are the ones who are making the game unhealthy.
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