Unrelated to the outage, but I hate headlines like this.
Facebook is down ~5% today. That's a huge plunge to be sure, but Zuckerberg hasn't "lost" anything. He owns the same number of shares today as he did yesterday. And in all likelihood, unless something truly catastrophic happens the share price will bounce back fairly quickly. The only reason he even appears to have lost $7 billion is because he owns so much Facebook stock.
Unlikely to be related. FB's losses today already happened before FB went down, and are most likely related to the general negative sentiment in the market today, and the whistleblower documents. It's actually kind of remarkable how little impact the outage had on the stock.
Zuckerberg Loses $7 Billion in Hours as Facebook Plunges
https://finance.yahoo.com/news/zuckerberg-loses-7-billion-ho...
Stop the hemorrhaging. Too much bad press for FB lately and it all adds up.