Because everyone can spin up their own irc server. It's not federated though.
irc is booring and dated
(even though it's much more robust than matrix and does not suffer from desyncs and stuff)
does not suffer from desyncs
Not entirely true. IRC can have network splits (I believe they were referred to as netsplits if I remember correctly) where one network can drop out. You can notice this when you see like 50+ people leave a channel at the exact same time because the network they were on disconnected, it's kind of interesting imo lol but also I'm a nerd so maybe that's why I find it interesting.
it's not as big of an issue as on matrix.
stuff can desync and the server has to decide which state is canonical, dropping out some messages
What exactly are you referring to? Matrix?
There's also IRC
How is IRC decentralized?
Because everyone can spin up their own irc server. It's not federated though.
irc is booring and dated
(even though it's much more robust than matrix and does not suffer from desyncs and stuff)
Not entirely true. IRC can have network splits (I believe they were referred to as netsplits if I remember correctly) where one network can drop out. You can notice this when you see like 50+ people leave a channel at the exact same time because the network they were on disconnected, it's kind of interesting imo lol but also I'm a nerd so maybe that's why I find it interesting.
it's not as big of an issue as on matrix.
stuff can desync and the server has to decide which state is canonical, dropping out some messages
Net splits are definitely a thing on IRC lol