Yes, you did in fact lengthen SR games...
But failed to adjust all champions and gameplay to said elongated gameplay.
Before this, a Jinx could be 20 min in and just finally finish Infinity Edge. Winning lane via farm allows her to be the first to become a threat. This makes the enemy laner's laning phase longer because she can easily beat them as punishment for not farming quick enough.
Now, around 16 min a Jinx can have a Stormrazor and Zeal with Tier 2 boots. Runes improve her early game vastly and allow the used to be who farms faster lane turn directly into a warzone at the beginning of the game. The early damage cover ups and gold given makes early games plentiful.
Am I wrong?