If you had read further down, you would have seen this...
Romney evidently hopes to benefit from Ryan’s brand as a fiscal warrior, without handing Democrats a gift-wrapped attack line to drive conservative-leaning senior citizens away from the GOP.
For the last 50 years, ever since the creation of Medicare, it's been the same theme from the democrats. Now, they are attacking with the predictable "Ryan will take away Medicare from Senior citizens" theme.
Just an hour after the pick, Debbie Blabbermounth -Schultz was being quoted on all top of the hour news saying, "I was on the budget committee with Paul Ryan and I know his tax plan is extreme right-wing ideology and he wants to eliminate Medicare/Medicaid for all Senior citizens"
Notice there is always an excuse for why Romney won’t take a stand on this or that. No one looks to his record for why that may be, but only what they Hope.