Why should workers care about such an inefficiency? Without worker solidarity, increased efficiency only enables their bosses to extract more value from their surplus labor.
We all, to some extent, do selfish things that on average make everyone worse off. You might call it greed. I'm just surprised to see people publicly approving of it.
But why is this so-called "greed" less acceptable than the "greed" of owners/investors, who want everything be as efficient as possible for their own benefit? Strong organized labor is how we accomplish "inefficiencies" like paid leave, regular breaks, safety standards, etc.