Smurfs have always been a problem and it's really annoying.
"I can't win against people of my level, so I'll go stomp on casual players to feel good about myself."
wish there was something we could do.
And sometimes, it's not even that. Sometimes, it's people who just generally get satisfaction from destroying players newer to the game and rack up easier victories. Though also, sometimes, people do it just to do it. Some don't intend to use it do purposely to destroy weaker players. Some people generally try to see how many times they can hit max rank...kinda like people who see how many times they can reach max prestige in CoD. To those people...it's not about wiping the floors with less skilled players....but more about as long as they are ranking up, even if they already hit max rank and reset, it feels like they are achieving something and get some sort of "I am progressing in a sense." form of satisfaction.
But yea, there are still a lot of people who do it just to destroy new players for cheap/easy wins.