People have complained every expansion that it’s the worst meta ever, worst expansion ever, and there’s always the nerf this, nerf that threads.
For example it was Naxx and Huntertaker (fair enough this was nerfed), then it was GVG and “urrg Mech Mage Nerf plz urge RNG worst meta everrr”, then it was TGT “Nerf Secret Paladin!!!!111 inspire sux worst expansion ever” then it was LOE “Reno is OP nerf plz I can’t play face hunter heal is cheat SMOrc” then it was Patches then it was... you get the point.
There are a few genuine concerns of power levels of a few cards or classes but it’s tiresome to hear the complains all the time either on topics we’ve already heard, We get it Cubelock and Paladin are OP I don’t need to be told a 100 times. Or we get complaints about stuff that one guy lost to. Urgg, no Dire Mole isn’t Broken and no that one toggwaggle combo you lost to ONCE isn’t the worst combo in the game.
But you won’t ever stop it. This is the internet, where everyone has anonymity. And when people have anonymity mob mentality takes over. They will do things and behave in ways that they would never do in real life or if they were named, such as illegitimate complaints, troll, be extremely vile towards others and whine about ever little thing possible.