«While we still use it heavily, IRC is an ongoing source of abuse and harassment for many of our colleagues and getting connected to this now-obscure forum is an unnecessary technical barrier for anyone finding their way to Mozilla via the web. Available interfaces really haven’t kept up with modern expectations, spambots and harassment are endemic to the platform, and in light of that it’s no coincidence that people trying to get in touch with us from inside schools, colleges or corporate networks are finding that often as not IRC traffic isn’t allowed past institutional firewalls at all.»
https://news.ycombinator.com/item?id=19763276
http://exple.tive.org/blarg/2019/04/26/synchronous-text/