It's not inherent to the protocol. https://ergo.chat/ does not have netsplits (from having a single server) and https://github.com/Libera-Chat/sable replaces the server-to-server protocol to eliminate netsplits as well.
And even when not eliminated entirely, they are infrequent and barely visible on well-managed networks like Libera.Chat. Many chat platforms have more (and longer) outages than Libera has netsplits.
Solved decades ago thanks to NickServ and ChanServ (though I'll admit they are ad-hoc additions on top of the protocol). And ~15 years ago we got native support for authentication (https://ircv3.net/specs/extensions/sasl-3.1)
It's not inherent to the protocol. https://ergo.chat/ does not have netsplits (from having a single server) and https://github.com/Libera-Chat/sable replaces the server-to-server protocol to eliminate netsplits as well.
And even when not eliminated entirely, they are infrequent and barely visible on well-managed networks like Libera.Chat. Many chat platforms have more (and longer) outages than Libera has netsplits.
> missed messages
Solved by most server implementations using https://ircv3.net/specs/extensions/chathistory
> bot wars over channel and nick ownership
Solved decades ago thanks to NickServ and ChanServ (though I'll admit they are ad-hoc additions on top of the protocol). And ~15 years ago we got native support for authentication (https://ircv3.net/specs/extensions/sasl-3.1)