The line simply states the number and make-up of contributors.
Getting into the tax cap and change in benefits is a whole different story. And yup, it's ugly. DC has already shown how willing and able they are to act like adults when the issue comes up.
To take into perspective the problem with the low number of full time private sector contributors, you have to take into account that at current spending levels, $0.40 of every dollar is borrowed. Due to FED intervention along with fear in the Euro-zone the interest on this debt has been kept artificially low. (killing people with savings, but that's another story in itself). So regarding contributions from Federal workers into the system, for every $1 in wages we add 40 pence to the already $15T of accumulated debt. This also means 40% of the match is borrowed money as well. That is not sustainable, and CONgress ain't dealing with it.
Now set down for a couple minutes with a calculator and plug in 4% instead of 1% as interest on that debt and see how that compares to the total Federal budget/GDP. Plug in 7%
Scary huh