I think you misunderstood what the man said, this what I heard from the post.
FNMA Commons Not Directly Covered by This Suit:
The jury verdict specifically awarded damages to holders of Fannie Mae junior preferred stock, Freddie Mac junior preferred stock, and Freddie Mac common stock. The particular lawsuit in question did not cover Fannie Mae (FNMA) common shareholders, so they did not receive a direct damage award in this specific case.
Precedence for Future Suits:
The comment suggests that the legal victory and the finding of "arbitrary or unreasonable" conduct create a strong precedent. This precedent could be used as a basis for a future, separate lawsuit brought by Fannie Mae common shareholders, which could also be successful.
"Pain Will Expand":
This implies that the financial liability or legal challenges for the government (FHFA/Treasury) are not over. If Fannie Mae common shareholders file their own suit and win based on this precedent, the total amount of damages the government will have caused the companies to pay will increase, or "expand".
It's true, "Steal from commons and give to preferred" by reason the settlement money has to be paid by the companies, the common shareholders own the companies.