I don't think CEO pay multipliers are unquestioned; I think what is questioned is the government's ability to regulate CEO pay. I personally feel that CEO pay is absolutely out of control. I also feel that it has happened as a result of board of directors failing to perform their duties diligently and any regulation reforms should focus on increasing board effectiveness and independence, therefore indirectly solving for the CEO pay issue.
That said, in the grand scheme of things, CEO pay, to my earlier point, rarely significantly impact's a company's bottom line (at least in the case of large public companies). It simply isn't a big issue.
From a macro sense, I don't think maternity or paternity leave is really a big issue either (if someone averages 2-3 children, that's going to be <7% of his or her career on leave). That said, in the age where many people change companies every 4-5 years, one could imagine that stringent requirements would create both age and gender discrimination because who wants to pay a woman from ages 25-30 if she's only going to work for 3 of those 5 years?