There are invite-based systems since the dawn of the internet, notably torrent trackers and closed forums, and mods can see who vouched for them. It’s not worth it unless the community has something unique to offer (i.e. new blueray rips, non-public deals). Adding crypto to it doesn’t add anything of value.
Watch anon switch gears to the big red R on the highway next. Due to how this story went it’s possible that reverse is the only gear anon ever uses.