I think it's kind of important that they do though.
I2P is an anonymous, uncensorable, encrypted network with no central points. This is a social good for the world in many ways that I probably don't need to list for you if you're reading this, because I'm probably preaching to the quire.
Sadly, central servers, even ones that exist inside of a decentralized network, CAN be censored, attacked or brought down in some way. IRC is a great way to communicate, BUT it is centralized, and therefore susceptible to attack. URC is a fix for that. Ideally, everyone in the world who uses IRC *should* migrate to URC. Especially those who inside of I2P.