It's quite concerning that ailin-nemui, who made the prior commit migrating to Libera currently isn't listed as part of the irssi organization[1]. According to GitHub stats, this is the person behind most of the code in irssi[2].
Worth noting that it's quite common for people to not be publicly listed as part of Github organizations. The archive.org snapshot of the organization page from February [1] shows the same member count, so suspect that's the reason.
[1] https://web.archive.org/web/20210224203331/https://github.co...