Well I don't think you need to take a chill pill. However, you should be aware that recently the forum moderators have taken on a more active role than their original charter (keeping pornography off the forum), and have appearently been given the authority and direction to determine what is and isn't appropriate to discuss in which forum, no matter how innocuous or legitimate a question. This apparently extends to determining for us what is or isn't a dead horse topic. To me a dead horse thread is one in which the discussion has simply degraded into a rehashing of the same arguments round and round without adding anything new, as opposed to any thread on a topic that has been asked before for someone than may be new. Thus I felt it a bit heavy handed for the moderators to move your thread as it hadn't degraded to that level of discussion, but appearently if a particular topic is irritating to a moderator then they can decide to move it now.
All that said, I would added that it wasn't personnel, the over moderation of late has been pretty evenly applied, and has more to do with the particular whims of the moderators on any given day and little if anything to do with you personally.
I would added that while I think the moderation is a bit OTT these days, this is a privately owned forum and thus the right to free speech is in no way being hindered. Thus you or any of us that don't like it are still free to start our own forum.