All these years of claiming he's just an "Average Joe gamer", and one win in Overwatch was all it took to take him back to the "one of the best overall gamers in the country" hilarity. Forget the fact that he hardly plays first person shooters, forget the fact that he almost never plays anything on PC. It's just all that raw hardcore gaming talent, dood.
Those 21 "kills" are 21 kills he participated in. More than likely (like 100%), his team carried him, and he had little to no positive influence on the outcome of the match. Anyone who's seen him play Overwatch on the PS4 knows that his terrible aim is the least of his problems. We know he played matches other than his one, too, but he's already writing those losses off as bullshit, lag, flukes and/or cheaters. The TV is just his newest boogeyman, and I predict a fundraiser in the very near future. Something something "it will make for more enjoyable streams with better gameplay, because I'm doing better at the game". You know, like how the Pokken controller for the Switch turned everything around for him. LOL.