No, the code is available, which is not the same as open source.

could maybe force Ars to put out a retraction

That’s obviously not what enabled means, at all.

If there is a button visible that executes a function when receiving a click, that feature is enabled.
That does not mean that the feature is actively in use, of course. Enabled and active are different states for a program’s functionality to be.

I believe it’s pretty easy to understand, there are people like me who don’t want to have AI functions popping up in our browsers without explicit enabling on our part.
I understand that you disagree, but it is not a difficult position to understand.

You don’t need to re-define opt-in and opt-out just because you support Mozilla in adding AI features to Firefox.

In my opinion there is no ambiguity at all.
Opt-in means that the feature is disabled by default and until the user enables it. This is NOT what Firefox will be doing.
Opt-out means that the feature is enabled by default and can be disabled by the user. This is what Firefox will be doing.
Whether the user actually uses or not the feature is not a factor in determining if it is opt-in or opt-out.

An it included linux native binaries! on the disk! It was absolutely fantastic, i played a lot in invasion servers for years and years.

People who want a headphone jack […] are unfortunately a very tiny minority of the entire population.

People interested in paying more for fair trade materials and repairable phones are also a very tiny minority of the entire population.
Of course I don’t have any statistic, but I would guess that the proportion of people wanting a Jack is significantly higher in the group of people interested in buying Fairphone that on the general population.

In my particular case, I’m still using my Fairphone 3, and I’m not buying a Fairphone again unless it has a Jack.

Absolutely not, of course it is about having fun.
Are you going to just experience something that makes you feel miserable? Not an unfun moment for catharsis later, but an entire make-you-feel-awful experience?
Getting lost in a fantasy world is about having fun.

They are not so dangerous, in more than 200 years there are only 5 deaths documented as of 2016 ¹ (I can’t find a more recent source), and as of 2023 there were 79 potentially severe lesions for 5337 castells ².