So literally "I disagree with the statistics therefore they must be wrong". Good to know.
The objective strength of a champion has nothing to do with performance at one time or another
So strong champions don't consistently perform well and weak champions don't consistently perform badly? That's why when a champion has 100% pick/ban and 75% winrate at worlds, Riot doesn't ever nerf them? I suppose Riot gimped Azir and Ryze because they weren't performing amazing in competitive play via objective measurements? The objective performance of a champion, when assessed with enough data, does tell you what is objectively strong. When champions are strong they perform well across a variety of players and regions. When they are weak they don't.
by your logic, Garen is good because there is a korean challenger garen onetrick or teemo jungle is good because there is a NA jungle teemo one trick.
Not at all. That's why you factor in playrate, matchup data, sample size, etc. Many of these are factored in the performance analysis algorithms these websites used.
I decided not to remove the low playrate outliers from those tier lists because I wasn't sure what a good cutoff was, and I didn't list it all because that would be tedious. But for example, Talon and Zed both have <1% playrates, which suggests that they're very niche picks or played by onetricks who specialize in that matchup. But that also means it is a viable playstyle that someone could learn if they took the time. Generally its not worth the investment compared to other, simpler options, but it shows that it can be done.
Furthermore, you're using one situation to try to argue for another. Jax, Irelia, Riven, Vlad, etc are not being picked by obsessive one tricks. They're common picks making up the top lane meta, so their statistics are reasonably valid. Riven is played in 10% of games. That's not onetricks. That's not just mains.
Far more people play in solo queue, including almost everyone on the boards, so the health of the game in solo queue is far more relevant to anyone here. I'm never going to be playing competitively, so I care about what champions are strong in solo queue. When you propose doubling the stats on Dorans items, most people here are going to think about how this affects their own gameplay, not competitive play. Ruining the game for 99.99% of the playerbase just because you think it doesn't matter is a terrible business model. The health of solo queue is much more important for the health of the game than competitive play.
When you discuss champion changes on the Boards, somewhere that is populated by regular players, not pro players, who play the regular solo queue game, it's generally assumed you refer to how this would affect solo Queue. I don't give a shit if Tahm Kench is amazing in competitive play, it will never affect me. As far as I'm concerned, his 46% winrate ass is shit, because in any situation where I am in game with him, he's going to be a detriment to our team. Tahm Kench is weak in solo queue, and that's all I care about. Riven is very strong in solo queue, and that's all I care about. Even in Challenger, solo queue is very different from professional play and it always will be. If I want to climb solo queue as a support, I should be picking Soraka or Pyke, not Tahm Kench, because those are the champions that are strong in the environment I play. If i try to climb in solo queue based on what is strong in competitive play, I will not have as much success as if I were to try to climb in solo queue based on what is strong in solo queue.
Champions that perform well in solo queue are strong in solo queue. Champions that perform well in competitive are strong in competitive. Statistics, used properly, are an objective measure of a champion's performance, regardless of whether you are looking at solo queue statistics or professional statistics. I am not a competitive player, so what is strong competitively is irrelevant to me. I am a solo queue player, so what is strong in solo queue is relevant to me.