It’s been a few months of service issues of the IRC server used for WWN, so from this point it’s no longer going to be active. Before the server issues, the number of users in the channel were minimal regardless, so it’s time. The IRC channel information and the mibbit quicklink have now been removed from the frontpage, and the chat category quicklinks at the top of the page have been merged with the forums and news links.
The Discord and Forums are still active (and will continue to be so!) so keep using them as you already do.