I might be wrong but it makes sense to spend more hiring dollars where they'll increase the bottom line (which is why they're still hiring) while reducing spending in places that are negatively contributing?
Yet, you can just get your current employees on a room, and tell them to stop doing those actions that won't increase the bottom line, and start doing those ones that do.
Obviously, people have different talents, and can't do equally well any task you ask them. But I really doubt Twitter even tried. No company tries. More likely they froze their employees tasks beforehand so they could be better evaluated.