Self-topic is usually created to remove spam posts. And another reason can be for any type of contradictory post. Based on the screenshot you have provided I could not see any type of spamming. So, the post is contradictory to his/her post. And contradictory posts should be deleted by those who are scammers or likely to be a scammer.
I had to unignore you to quote your post ;( ! A sad moment for me!
He's post is a spam. Accusing me in my thread of being the alt of someone else and saying that anti money laundering checks are scammy/illegal or dangerous is a SPAM.
He did not made a constructive post to my thread and more I can delete any post in a self-moderated thread.
Also he insulted me, so it's my right to delete his thread.
Unfortunately NewsletterBitcoin dissapointed me ;(