I would highlight the "if you are handicapping your team". And there is a difference between anti-meta and off-meta. Off-meta pick is technically any champion, which are sub-optimal on that role, but with skill it can work. Anti-meta pick is technically the same except it is so fundamentally flawed that with any minor game knowledge you know it is not going to work and would put the team into an inherent disadvantage.
Why is Pyke and e.g Soraka an awful jungle pick and is considered trolling, whereas Aatrox is just off-meta? Simple answer:
- Aatrox can take objectives and have decentish clear, whereas Pyke and Soraka are going to struggle at the basic creeps as well.
Even when Pyke jungle was a thing, it was really really off-meta, but it was technically eliminated a year and half ago. Why would even one consider it still a legit pick in Ranked Solo Q? The Pyke jgl I had was struggling at the Krugs while the enemy Amumu had already twice as much farm, and when Pyke could finally commit himself to ganking, all lanes were lost, because Amumu kept ganking all of them. So his stupid pick cost 4 others the game. Is it okay? I don't care what a professional team did, because Solo Q Ranked =/= pro-scene
You also amuse me that you defend such players, yet you same people come here to tell Riot that their matchmaking is bad, because you got such players in some matches. You get such players, because you don't want stricter rules. Also Ranked is played, because players would prefer more serious matches, not to play with players, who want to try out idiotic, fundamentally broken picks. That's what Normal is for or play Ranked Flex with 4 others in a premade, who is going to tolerate such. If you don't aim to win, then play Blind Pick, but personally I enjoy the more serious toned matches where the aim is to win. I don't like playing matches with people, who don't even try from the beginning.