Why buff tanks, then buff their counters even more?

So, they changed the jungle item for tanks, so they did a tad more damage, fine, woop woop, tanks are really stwong, now because tanks are strong, they have had to make the off tanks even stronger, which defeats the purpose of tanks, now garen and darius, for example, are more tanky, and do way more damage than real tanks. Delete, naut, amu, ali, sej, rammus please, they are no longer required in this game.