I disagree. I think OP is both relevant and correct. Also, people are EXTREMELY inconsistent with what they are having issues with, which is exactly OPs point. There are half a dozen posts every week complaining about all melee having permanent stops + uptime and another half dozen posts about how casters have precog and don’t need to cast.
There are posts about mage damage and mobility, warlock damage and tankiness and pets/burst/casting, there are posts about DK/Ret being ranged and warriors/dhs having infinite uptime and damage. There are posts about hunters being broken and needing 20%+ Nerfs, there are posts asking to remove cyclone, there are posts complaining about devastation damage and windwalker damage and ele shaman damage.
There are posts about damage being too spiky. There are posts about the game being too scripted and damage not mattering outside of CDs. There are posts about sustained damage being too high.
On top of that, the VAST majority of people complaining about class XYZ being op often have negative win rates and almost always have a misconception about how to play a matchup and are asking for a balance change over asking for help.
It’s genuinely crazy to me how many people use the forums to ask for nerfs over asking for help in a MU.