First time I write a comment on this, I'm not the kind to complain but I've been seen that funnelling strategy a lot lately and boy it's annoying. I've experienced it around 4 times in my last 10 games or so and its honestly not strong at all, I mean from the 4 games all four failed and were basically inting. It could be because i'm plat 1 and maybe they are bad but the annoying thing about this is that it completely destroys the fun of the game.
basically yi only ganks mid forgets about the other lanes, so there's 0 team play, all about the yi which is whats most annoying about this strategy. Yi is already considered a lose hard or win hard champ so combining this with taric makes it worse. I hope there can be some kind of fix to that strategy, not fun to play against or with it.