> A ban from any one of these 'unpaid, unaffiliated subreddit moderator' will result in a shadowban from the majority of the website.

Which sounds like a frightening and dangerous abuse of the moderator privilege to me. I'm astonished that Reddit has continued to allow this practice to continue. Also surprising are that you can comment in a subreddit and get banned from totally unrelated ones just because a mod decides it to be.