There is no tank meta
There's just an idiot meta. People who think Sated Devourer and Master Yi are the only way to go. They don't think about anything else other than the glorious pentakills, yet have no actual understanding about any element of the game despite investing literally thousands of hours into it. I physically cringe every time I see the entire team go all in, all AD all melee with no durability, crowd control, armor piercing or even attack damage because they're all obsessed with building Rageblade, Blade of the Ruined King, Sated Devourer, MAYBE Youmuu's Ghostblade and that's it (which happens more often than you'd think). I call them out on it each and every time, doubly so if there's one or more tanks on the enemy team.
"Our late game is awesome!"
They say endlessly as they give up all 11 turrets, 3 inhibitors, 2 Rift Heralds and 3 dragons before the 15 minute mark. All the while the jungler has just BARELY been able to obtain his precious Devourer and has yet to put even one stack on it despite humping the Razorbeaks for three minutes straight. The late game doesn't mean shit if you immediately give up the early and mid game. ALL phases of the game fucking count, not just the one YOU want to focus on.
No one builds armor pen against tanks anymore. I point it out each time, and each time I am proven DEAD RIGHT.
"I got a ghostblade!"
Yeah, Ghostblade (20 armor pen) is a drop in the fucking bucket compared to the enormous armor values tanks regularly carry. A ghostblade only really counts when you're dealing with some squishy target, and that's just to rid them of what little armor they have. On top of that, a Black Cleaver shreds the enemy's armor (by percent!) to increase your ally's damage as well! Nobody builds a Last Whisper, either, much less its upgrades, despite complaining endlessly about Mundo's constant health regeneration or Vlad's enormous spell vamp. They see Ignite as the only source of Grevious Wounds and call it a day, even when I'm trying to smash it into their dense skulls about the items that carry Grevious Wounds.
The reason why people think there's a tank meta right now is because they're fucking stupid and approach and treat tanks the same way they would an ADC, a glass cannon who has a ton of consistent damage and that's it, a mage, who won't last two seconds in melee, and assassins, who are also glass cannons with enormous burst damage. Italics: Tanks are designed to OUTLAST YOU. If you're an assassin, once you blow your load you need to get out fast, and tanks are designed to STOP THAT. They'll endure through the burst damage and whale on you until you decide to run away or die.
Their weaknesses are everything you dumbasses never pick or build anymore: RANGE. And no, Vayne doesn't count. I mean real range, like from mages and spells, where you can fire from a safe distance, or fire while you move (basic attacking doesn't count; that one instance of you stopping to turn around and shoot is just enough time for any tank to punt you into the ground). There are plenty of items designed to negate tank defenses. Items DESIGNED for AD champions of all colors and stripes SPECIFICALLY to take down tanks! Once you strip away or negate their defenses, you've stripped away most of their menace.
Also, magic damage! Most tanks are equipped to deal with attack damage, but rarely magic damage. Unfortunately, most of the magic damage I see in the game these days outside of the support role come from Zed's ult, Diana, Rageblade and the fucking Devourer.
Finally, NUMBERS. Tanks aren't really good at fighting when they're outnumbered. Their base damage is fairly weak and they have little else to fall back on once their skills are on cooldown. Even in a 2v1, they suck tremendously! Unless a tank is very far ahead, most of his menace comes from other champions. He's just enabling the kill to be that much more easy for himself and his allies. Unfortunately in this all assassin, all in all AD all melee environment where players treat the game like a 1v9 and actively try to get their allies killed first before they can swoop in and steal the kill, there is almost no cooperation or teamwork or disabling the enemy so they can't escape or retaliate so they could be killed without collateral damage. That's why tanks are thought to be overpowered right now (ironically no one picks them!).You assholes set up this environment. Your absolute refusal to see anything past all the pentakills and meta charts in your half-baked power fantasy has led to the shit state the League is in right now, not Riot. Now get your head out of your asses and for once in your miserable lives, THINK.
ap tanks that build the items are what ALOT of them say the problem is.its dumb