Correction, Firefox is controlled opposition for Google to deflect from being accused of having a browser and browser engine monopoly. Mozilla post 2011 is a very different beast; they decided that copying Chrome was the way to go, stripping out all useful features culminating in the removal of the powerful XUL addon system citing security problems (while ironically the amount of malware extensions shot up AFTER they switched to the Chrome originated Web Extensions format, which are far less limited in capability). Meanwhile, the simple minded continue to fall for their claims of respecting privacy and user choice.