It’s mentioned as one of the entities Mozilla will pressure for change, and it is listed in the article on 404 media that Mozilla cites.

scraped public data from different platforms can be stitched together to infer identity, location, status, beliefs, and networks — even if no one website reveals all that alone.

If they don’t use the data from the fediverse, it’s only because it’s too small to bother. These platforms are easier to scrape than any proprietary service.

Always shouting!