I imagine FR has lot of members and a lot of information. Jim and the FR staff don’t have an office full of moderators like Facebook. They run this on a shoestring. So don’t expect there to be a concierge service to give you the ins and outs of posting rules.
Don’t get miffed when something doesn’t go your way. There’s reasons for it.
I had a thread pulled once. I don’t know why, it certainly wasn’t vile, defamatory or distasteful. But I was called “DOA”. So I figured that maybe it was too boring.