How so? Rolling out changes to default settings in an unannounced, automatic way based on users being automatically enrolled in that preference update program,

How so? Rolling out changes to default settings in an unannounced, automatic way based on users being automatically enrolled in that preference update program, with difficult to understand opt out settings changes required, sounds _absolutely_ like third party authors able to make unrestricted (and unannounced) modifications to my system. I cannot understand how anyone could think otherwise of Normandy.