I like to think that he forgets, keeps trying and then makes a new post about it

Shows like that rely a lot on real conversation & stories. Eventually, Dan & Arin had been doing game hrumps for so long they just sorta, ran out of both? At least, not to be able to support such a hellish release schedule of episodes. Too much time together, playing games, means they didn’t have anything to supplement it with anymore, so all that was left was the same jokes repeated for timekillers.