Set aside Ms. Wasserman Schultz's last line where she inadvertently reveals her inner nanny possessed by almost all liberals (What's wrong, exactly, with allowing mature adults to "figure it out" for themselves?). Consider instead that doing nothing means that the system goes bankrupt in a decade, and doing nothing is what the Democrats evidently plan to do.
Grandfathering everyone over 55 into the present system and then giving future retirees a voucher that enables them to buy their own insurance, which is the GOP/Paul Ryan plan, may not be the best idea, I don't know, but at least the elderly will have something. If the Democrats don't soon present a viable alternative the elderly are certain to have nothing.
I suspect, but can't prove, that Democrat opposition to the Ryan plan stems from the fact that if people are given public money to buy insurance, insurance companies will benefit. President Obama has as much as said that he wants to put insurance companies out of business in order to create a single-payer (government-run) system (see below). Thus, he and his fellow lefties will oppose anything that empowers the private market and diminishes the power of government.
The elderly are merely the eggs that have to be broken to cook this socialist omelet.