Earlier quoted context omitted.
It should be opt-in, not opt-out.
Man, the privacy critics really come out of the woodwork every single time "opt-out" is mentioned, regardless of the actual facts for a specific situation. The developers explicitly state they set the anonymous IP address flag. There is nothing that links back to you as a person. Are you really concerned that the developers know which packages a random, unknown person has installed? Crying "opt-in" to every single li…
The support for opt out acknowledges (implicitly) that the choice to upload data is rightfully the user's own prerogative. Then paradoxically enables the feature by default anyway and places the switch behind some esoteric opt out commands.