I think the comment you're responding to is suggesting that though giving someone (Mayer) the benefit of the doubt might be humane, it may not be, strictly speaking, rationally appropriate.

I believe the financial compensation angle is that because she was particularly well compensated, she is perceived to not have much skin in the game. As an aside, I don't think this is especially productive because it is incredibly rare to find someone running a company who isn't deeply emotionally invested in that enterprise, but the perception remains.

Obviously, though the crowd wants to excoriate Mayer I think if folks have a problem with her compensation they should look to the board.