Many Twitter tweets I see are from people I do not follow yet their tweets appear in my Twitter feed. Why?
Twitter inserts them because they can!
Twitter inserts others tweets into each of our feeds based on its own secret algorithms. By choosing to insert tweets from people we choose not to follow, Twitter introduces its own potential propaganda messaging. 100% of such tweets I checked are political in nature – and I do not know why I am seeing them.
Another reason I am no longer a regular user of Twitter.
(I filed this under Censorship as the closest matching category – by increasing the noise to signal ratio, Twitter is censoring the content I wanted to see.)