It's because there was too much noise. Spam, new 0 karma accounts creating threads and posting the wrong kind of shitposts, etc. It was virtually inevitable.
I tried to comment there with a 14+ day old throwaway account 4 hours ago and was met with a bot deleting the comment.
"It looks like your account is too new to use /r/wallstreetbets. Sorry about that, but people use new accounts to spam us all the time. Please don't ask when you can be approved because we're going to say no and then laugh at you. Your account must be one month old at least."
