Whats up with matchmaking since 9.14

Ever since 9.14 hit the live servers matchmaking got weird and unbalenced. i dropped from D1 to D4 in weeks since the patch. and it isnt me playing bad. its because TFT got released. And everyone knows Riot only cares for TFT The most boring game mode. 9.14 was a disaster a patch full of bugs and stuff. But since that patch matchmaking is just weird .
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