So... you would visit a different church, leave flyers on all the tables in their fellowship hall, and when they object you would argue with them that you should be allowed to clutter up their tables?
That's basically what you're arguing here. This forum is RoboOp's property and he puts it here for us to hang out and chat. He doesn't want advertising so we don't post advertising here. His property, his right.
OnceFallen is a moderator here, and he has already explained the official position to you. You are of course free to argue with the town sheriff, but I've never seen it turn out well.