I'm not watching a 20 minute video on the topic, but there is a user in an HN comment[1] stating links to debian.org and qubes-os.org were removed by facebook.
Thus Facebook is not censoring Linux discussions or Linux content, what DistroWatch claimed, it blocks linking to what Facebook deems as malicious links (correctly or incorrectly), something a lot of software does these days.
This is what the yanks call "a complete nothing-burger".
This is what the yanks call "a complete nothing-burger".