Unpopular opininon, it's not Jungler but Support that's low-key most impactful on the game

sImply because carries have farm and no diminished gold to worry about mid-late game.

when a carry is behind they can mitigate the impact through hard farming but a support depends on good allies for income.

supp is stronger than marksmen early, bot lane has most impact on drake control, drake control has most impact on match, therefore supp has most impact on match.

In other words, the power gap is exacerbated far more when there is a support gap

E.G. a support lost lane cause adc tried to secure a kill by flashing forward, just for enemy to pop heal and counter, only got 100g on support item, can clear about half the crashing minions under tower until diminished gold kicks in while dodging attacks waiting for adc to return.

similar thing happens again, this time its 1-1 trade for the marksmen, but I only have 300g from supp item so I can farm up to that much before diminished, but the enemy supp has 550 reward gold... It's just a toxic mechanic that kicks supports when they're down, the most honorable & selfless role(in comparison :P) gets the worst treatment...

once this scenario has played out all a support can do is be as carriable as possible, nearly futile if they are melee tanks..

takeaway: -supports should have more reliable sources of income -playing tank support is asking for trouble