Should John McCain's mom be worried?

Jacob Weisberg says when it comes to pro-death policies, the Republican Party knows from life expectancy:

Why are Republicans trying to kill America's old people? After all, senior citizens are more likely to vote for the GOP than for Democrats. They were the only substantial demographic segment John McCain won in 2008. You'd think Republicans would want them to hang on as long as possible. The problem is that because of the Democratic programs Social Security and Medicare, the aged are expensive for government to keep around. Some years ago, my former colleague Jodie T. Allen suggested a reason for what she called the GOP's "pro-death" policies: Faced with an unpalatable choice between cutting benefits and raising taxes to pay for the growing costs of entitlement programs, Republicans gravitated toward a third alternative—restraining growth in life expectancy. If you want lower taxes and aren't willing to risk cutting spending, you need fewer beneficiaries.