I did go through the report logs and while someone did report your post (and it's marked as handled), it seems like not only your post, but the entire thread was deleted alongside it. Not sure how post notifications work when a thread is deleted instead of trashed but maybe it's sent out on thread deletion (=/= thread trashing) as well. The thread you're linking to is a newer one.
It is not new thread.
Take a look, post was right between these two posts
http://prntscr.com/kc18nc archived again here
http://archive.is/vkJiW , and this is thread with my post in it
https://archive.is/2wDMN also thread is still under this number 4723436.0 so it is the same thread.
If that's the case, not really sure why it got deleted. The only report that seems to be related to the situation is pointing to a deleted thread. I'd PM Cyrus about recovering the deleted post, but it seems like you've already reposted it.