I think your post has been considered as spam that's why it's been deleted. Just look at that thread where you posted, it's already a spam Megathread.
How can a positive post be considered as spam? The thread is self-moderated. Is this the reason for which thread creator can do whatever they want?
The thread going to be a total trash because thread creator is deleting good post instead keeping them alive and deleting the spam.
No rule for this?