If all of these 'phone home' features are as benign as you say-- why isn't there a clear, exposed, and stable user setting to disable them? At best there is m

If all of these 'phone home' features are as benign as you say-- why isn't there a clear, exposed, and stable user setting to disable them? At best there is maze of about:config which incompletely prevent firefox from phoning home and are regularly undermined by new additions.