This is ridiculous.
They want to maintain a fake rate of return assumption?
You call it "fake," others call it "kicking the can down the road."
Then in 10, 15 years or more, they'll re-visit their balances and say, "gee, our returns were less than previous (Democrat) administrations expected!"
And then they'll re-project another period of fake returns.
As they continue to kick the can down the road, the excuses become more and more ludicrous until enough people don’t buy it, and critical mass is achieved.
And the economy utterly collapses in a few hours, beginning with all cards in your wallet becoming worthless.