The problem with them is that you can counter-pick all you want, but strategies can mitigate weaknesses. As long as the other team can force you into a situation where your counter doesn't work, then it won't matter.
Like, let's say you pick up
Razor to go against
Outworld Devourer, typically favorable for
Razor. However, they put
Outworld Devourer safe lane solo and now your
Razor is not able to counter him because you selected
Clockwerk to offlane early on and he cannot rotate mid to face off against
Queen of Pain since he will get dominated.