What are some examples of playtesters making games worse in the final product?

Valve QA "Don't Hire Absolute Mongoloids As Testers" Challenge: IMPOSSIBLE

How would getting lost in a featureless repetitive cave make the game better?

>>713725146
You could try.... not getting lost?

Does yellow paint count?

>>713725615
How fucking retarded did capcoms playtesters need to be for this to be implemented?

>>713725245
If you're not getting lost in the first place than making it more linear doesn't hurt the game anyway.

>>713724956
I feel that devs like Valve intentionally hire idiot playtesters specifically so that they don't design shit in a way that's too obtuse, which they were clearly concerned about.

someone came yellow paint all over this game..

>>713726223
>level design should be cramped and linear, you shouldn't have stray paths for environmental story telling, because uhhh... it wouldn't hurt the game if it wasnt there!
Holy reddit

>>713726786
You can play Assassin's Creed if you wanna climb non yellow surfaces

>>713727348
You can play mario if you want a soulless A->B bing bing wahoo walkway

Any game where you can piss on walls to open new paths?