Why not just update on your thread.
I think this kind of topics or testimonies are not needed to create a new thread. Can just update these on your (thread) as the testymoney, IMO would be nice from user is also sharing the experience by him self.
Perhaps, he make a comment about these.
I agree with you. I think they read the thread posted by sportbet.io about a $50 spin winning over $42 million. That's why they also want to post this kind of story /thread. Absolutely, they're posting this for promotion and to encourage us to gamble in their website and to believe that what happened in the post could happen to us.
I wouldn't be surprised if this thread is moved to the archival section or deleted by moderators.