With how much they ban people, how is anyone still left posting?
I can just refresh the profile page in an incognito tab and watch new accounts disappear at random. One hour, one post, three days, 20 posts, subreddit, IP address country or region, browser, single use mail provider, nothing seems to consistently matter. How it it actually possible for, like, some normie doofus to actually start and keep an account?
What exactly do you mean when you say 'new accounts disappear at random'? Do you mean that the comments disappear or that you get the (shadow)banned message?
If it's just comments, it is easy to answer.
There's never a message. The user profile page disappears along with all comments. You're free to shout into the void forever with no indication that anything changed.