This will probably just kill IRC entirely. Freenode was keeping IRC alive and now that it has fractured, there will be little reason not to use Matrix or Discord as the new wave of developers do not care that you can't talk on Matrix via netcat.
Matterbridge (and probably similar) exists. If some old farts (myself included) want to keep using irc hosting your own isn't bad, and having a bridge between that (and other services/protocols) and discord enables everyone to use whatever client they want. At least that's what I'm doing for a few groups.