Librewolf is Firefox for thoughtful people. It might cause a few aggravations at times, but thoughtful people understand that is not Librewolf's fault, that is at the very least shitty apathy and usually malicious intent on behalf of the vast majority of websites on the internet. It does a pretty good job making things work anyway despite the evil, but it's really not Librewolf's fault that it doesn't submit to evil by default.

Did you try reading the article? Because they clearly answer your question.

The controls allow you to block all future AI features as well, so you will never see new AI stuff.