From my limited experience on this forum it would be easier to get D Trump to explain quantum physics than to try to explain the rationale of why a topic or response is deleted. I am sure there is a sound reason for such deletions; but it is beyond my ken.
Its ridiculous that when a post is deleted you are not given the reason why. I am not saying open up a discussion but at least tell the poster the reason why.
I have gotten notifications for that once or twice, but in this case the entire thread has disappeared. I don’t remember anything controversial going on in it, it was rather calm.