With the signed message request in the other thread ignored combined with him posting in this thread but without a signed message, things do not look good for him. Sometimes it is better to not respond in threads brought up about you, but this is not 1 of those times.
If he made a meaningful post here it would show he is determined to try to right a wrong that was done to him. Signing a message would be helpful but there would a suspicion related to the writing styles and with the previous owner/owners of the account and many would suspect the address would be part of the deal which saw him take ownership (unless the account was hacked).
Well, he was afforded every opportunity to clear his name and he refused, first by locking his own thread and then by posting sarcasm here.