The ellipsis menu has a mute function.

It's in your feed because somehow or other you engaged with similar content, the author on a different topical piece, the publication, or it just was just part of the dispersement rotation.

You have think of your feed horticulturally. You either keep up with the pruning or the weeds take over. It's the same for all of us.

This isn't a conspiracy or a political agenda. Calm down. All social media algorithms work more or less the same.