[croes]

If you hadn’t the option to go in it is not opt-in.

If so put you in by default but you have the option to go out it’s opt-put

So this is either opt-out or not a option at all

[marshray]

The law of the excluded middle does not create semantic problems for the phrase "being opted-in by default".

Human language does not work like that.

[croes]

There is no excluded middle.

You have to turn it on = Opt-In

You have to turn it off = Opt-Out

Just because the option was added later on doesn’t change that.

Or tell me what’s the difference for me between Opted-In by default and Opt-Out