In case you're using Firefox on mobile - so myself and like four others - disabling Firefox' new Facebook data collection feature is quite a bit harder than on desktop, but it can be done:
chrome://geckoview/content/config.xhtmlaboutConfig and enable itabout:configdom.private-attribution.submission.enabled and set it to falseDone. This only works on Android, because Firefox on iOS is just a Safari skin.
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