The non-partisan Congressional Budget Office projects that the Ryan plan will cause the cost of buying Medicare-equivalent insurance policies to exceed the median income of retirees shortly after it is implemented. This means that an independent analyst has determined that the plan poses a risk to the security of those under age 55 who would be subject to Ryan's Medicare program.
Therefore the NYT is inaccurate when it reports that:
"Ms. Hochul, the Erie County clerk [a Democratic congressional candidate in a special election in upstate New York], argues that the Republican plan poses a risk to older residents."
This "risk" is not just something that Ms. Hochul argues, it is something that she is calling attention to, since this is a fact that has been determined by independent analysts. However the risk is actually to younger residents (those under age 55), not to older residents who would be less affected by the Ryan plan. (It does leave in place the donut hole in the prescription drug benefit.)