That's misleading, Firefox itself is free software, they just recommend some non-free addons "While the Firefox source code from the Mozilla project is free so

That's misleading, Firefox itself is free software, they just recommend some non-free addons "While the Firefox source code from the Mozilla project is free software, they distribute and recommend non-free software as plug-ins and addons." https://www.gnu.org/software/gnuzilla/ https://www.gnu.org/software/gnuzilla/