He was named CEO and all hell is breaking loose. Mozilla is the entity that primarily exists to continue the development of the Firefox browser after AOL acquired Netscape and signed a licensing deal the same day to use Microsoft Internet Explorer. Netscape was relegated to be the browser for Compuserv – the online service AOL had bought and rebranded as AOL with training wheels for people just not smart enough to use AOL. Not surprisingly, the Netscape people cashed out their AOL buyouts and left en masse.
Mozilla was mostly funded by ad revenue from Google – but now that Google has Chrome and Android, it has no need for Firefox – and FF has been losing much of its market share even before this.
Think of Brendan Eich as the Hester Prynne of the 21st century.