There are a couple of references to Freenode still on CommOps pages. On the front docs page - https://docs.fedoraproject.org/en-US/commops/ - there’s a big blue box which says “IRC: #fedora-commops on freenode”. The “Writing a Community Blog article” page at Writing a Community Blog article – Fedora Community Blog has IRC links titled “Freenode IRC”, which do indeed still link to Freenode. These should all be updated to Libera.chat.
Also, it seems a bit odd that CommOps has a Telegram group but no room on chat.fedoraproject.org , except one that’s marked as “old”…