devtrackers.gg
Pretty blatant and admits to cheating in game chat saying he's trolling because he doesn't like playing Modern Warfare. Not awesome that he/she is now just ruining our enjoyment of the game still.
Please take a look, u/FoxhoundFPS, if you think any action needs to be taken.
His profile pic, name, and level: https://i.imgur.com/BMu8n96.jpg