Users of the framework may override the value for this setting in runtime, as oppossed to using a static value written into Info.plist.
With the current implementation, the fix for issue 1480 was a breaking change, making users that set this parameter dinamically not see the 'Remind me later' button anymore, unless a value is provided in Info.plist.
Sparkle users that set this parameter in runtime should not be forced to set the parameter in Info.plist as a workaround to have the 'Remind me later' button visible. Instead, Sparkle should honour its documentation and make the value dinamically set via [SUUpdater setAutomaticChecksEnabled] take precedence over the defualt set in Info.plist.