If your description is accurate, that would not be me =] However I'll also add, if you think your description justifies abusing a technicality of the game to screw over what you perceive as a new/bad player who qualifies to queue Rank Solos, I think you're wrong.
So I'm a Jugg tank with a tactical and 306 iLvL and 3 set pieces (getting the Ranked win daily helps with a 4th). I guard swapped on both rounds. At least 1 person (probably the op stealth afk kicked me or whatever) said things indicating they weren't satisfied with me, and us losing, and then said they would kick me after we had already lost the second round, meaning it was a vindictive kick and an exploit, because the kick tells me on my screen I have to move in 15 seconds or be removed for being AFK, which I was not, I was dead on the ground.
So in my case I wasn't trolling or throwing, as I define those both as intentional acts, and my intention was not to troll anyone or intentionally lose a game.
Now if what you mean is, you think kicking someone for being/doing something you don't find satisfying, maybe that justifies AFK/abuse kicking players? Hey, my tank didn't taunt to my satisfaction, do an AFK kick. Hey, I died, the class that can cast heals sucks! AFK kick. Hey, their team is still alive and ours died, come on DPS where's the damage? AFK kick. Yep =]