Yeah this post is just a griefing troll. Reddit is losing so there'll be more of it for a while. Thanks for pointing out what should have been obvious to op.
I dunno. I'm an autistic anxiety-sufferer who scours subreddit rules before I ever try to post anything, specifically to avoid the embarrassment and shame of doing it "wrong", and some of those subs are still impossible. Have you ever tried to post anything in r/Showerthoughts? The rules absolutely don't cover all the things the automod will instantly remove. It uses some kind of keyword tagging system that is never explained in any of the sidebars or wikis. I tried maybe a dozen different thoughts over the course of a couple months and not one of them got past the automod (well, except for the one that a mod reposted as their own 24 hours after mine got deleted, but that's gotta be a coincidence).
Or, my second-favorite, the one where your post gets autoremoved for "Rule 4", but there's no list of numbered rules anywhere on or linked to the subreddit. I think that's a "feature" of New Reddit, where Old Reddit users can't see the sidebars anymore under certain conditions, but I'm not sure.
And then, third favorite, are the ones OP is probably talking about, where the rules amount to a college textbook's worth of pages that have been through no developmental editing or copyediting, so they're more vague than 5e's description of the Magic Jar spell, but whatever interpretation the mods are using, it's not the obvious one... or the second-obvious.... or the third-obvious...
I was never able to post anything to Showerthoughts, and not for lack of trying. One time the automod even said my post was unoriginal despite me having already done a Google search for it. This was before AI got big, so I can only imagine they had some super advanced AI that could understand context and make judgements.
Anyway, I unsubbed after seeing the 5th repost of the same old showerthought content and never looked back.
For best results, in any online community, it is wise to read the rules before you contribute
Well if you read my post, sometimes it's not just a question of reading the rules - you have to literally study them. Sometimes they are voluminous, and contain caveats.
If you encountered a community like that, maybe they needed those, there is a reason they are there and people keep posting.
For the immaculate example, see r/askhistorians where I guarantee your answers will get removed even when properly sourced since it has to do with how tight their quality control is, which that was needed to make one of the best communities out there.
Rules are not a reddit especific thing, once communities grow bigger over here more and more will develop and perfect rules that better suit their identities, it is a necessary part of this kind of social media.
Your post kindd of reminds me of another post today where someone pointed out at 4 deleted comments, with no context and basically said "reddit doesn't respect freedom of speech, see how far mods have fallen since the blackouts" which was useless circlejerking, communities are no different that subreddits in that particular sense, moderation and rules will still be present here, a mod deleting your post has nothing to do with them being on reddit or not.