“Firefox includes a unique download token in downloads from Mozilla’s website and uses telemetry in Firefox to send the token. The token is not included in releases from the Mozilla FTP.”
I did not find any clear answer about this doing a quick search in the forum and using online searches.
Great question. I would say that the token is not included since it is only on the Mozilla’s website.
Edit: Well, I made some testing and WinGet downloads Firefox from the same server as the Mozilla’s website takes from (https://download-installer.cdn.mozilla.net) so I think the token is included.
Afaik, Any installer that downloads directly from Mozilla sever/cdn will include the token. My understanding is that the only way to circumvent this is by downloading from some 3rd party site that hosts the installer (which i personally would never do) or download from Mozilla HTTPS repo.
Edit: I believe this token is disabled if the telemetry is set to off in regular Firefox settings. But if a user does not even want it included then downloading through their repo is the only option.