I think it is unlikely the FEC will do anything, but for a different reason: Wu is a meaningless nobody who will never be in office, and doesn't collect enough funds to be worth an investigation.
There's a bit of caveat emptor in play. If you are a virtue signaling out-of-state chump donating to a Twitter hack's futile "campaign", does the FEC really need to waste its resources protecting you from the inevitable outcome when your money is spent on worthless shit and life expenses as the campaign ambles its way into a flaming dumpster?
Hopefully those donors see the junk Wu bought with their donations collecting a sickening layer of tar and ash dust in the next round of publicity photos. Gross.