Way too much damage and a perma gank meta where Lee Sin loses out on nothing by spending more time setting up ganks than farming.
The damage being way over the top.
Vision being gutted to the point where it's way too easy for jungle pressure to turn the tables.
Even pro players suffering from the effects of "top lane being camped" with the losing bot still being nigh on hopeless for the top laner to try and carry.
And don't forget Lee Sin and Kaisa being absolute cancer to play against but have been left unchecked for some reason.
This finals was an amalgamation of everything that's wrong with how impactful jungle is in invalidating teams and how easy it is to set top laners behind merely by forcing them to "play safe". Turret plating leading to uncontrollable snowballs, and sky high damage which makes this into a game of seek and destroy.