Yes, but if you look closely all of those submissions were made on the javascript subreddit. It’s entirely possible that this sub was still private on the 24th, and went public on 25th. I don’t know for sure but that seems to be the most likely scenario.
Edit: Looking at the blackout tracker, javascript was still private on June 24th, which is the day that the OP of the video was manually deleting his submissions.
deleted by creator