Warlord's Bloodlust isn't the problem with Yasuo
He actually doesn't even benefit from it that much until much later in the game.
is the current problem. Riot should revert the buffs to the crit chance for these 2 items. The only reason they did this was to make ADCs even more retardedly op than they already were on PBE and for no other reason. Buffing Yasuo with it was just a side effect.