Tank Metas are just the worst
If you don't have 3+ tanks on your team, the other team always will. If you don't end the game by 20 minutes vs an all tank team, you will automatically lose. No other meta forces every non adc to pick a tank or lose if the game lasts longer than 20 minutes.
, if the game has something like Feral flare (or sated devourer prepare your anus)