The game reached a point where Tanks and defensive playstyles don't fit in anymore.
And it's not their problem, it's the 'damage above all else' mentality's fault. I see a future, not so distant, where all tanks become bruisers, champions oriented towards damage. There'll be no defensive champions anymore. It's a sad reality to imagine.
It's just a matter of time before they inject more damage into Ornn, Sejuani, Zac, etc. No wonder why Courage of the Colossus, a pure defensive resolve keystone got reworked into Aftershock, a damage keystone with a defense (that can be ignored by penetration and true damage) buff.
with Leona, and there isn't a thing she can do about it.