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Firefox 128.0 Release Notes
(www.mozilla.org)
A place to discuss the news and latest developments on the open-source browser Firefox
I suppose. They do launch the release page after an update, which has a link to the release notes. The release notes link to the page I linked, and that page describes how it works and how to disable it, which is just a setting in the privacy section.
So while I'd like it a bit more front-and-center (i.e. display it on that release page), I don't think they're trying to hide anything here.