anything win when compared to the ultimate underdog. but that's hardly a valid comparisons.
discord only win from other opensource forums because you don't have to own a domain, i guess.
the real time part of irc was taken over by matrix.
It’s a major factor in what made Reddit big, too. Spinning up a subreddit is effortless and takes practically no knowledge and similarly easy for users.
IRC doesn’t seem terribly complicated to me, but I came of age when using computers seriously required a higher level of knowledge. I don’t find it restrictive either, but when I started communicating with others online, being able to send “just” plain text was amazing. Things have changed since then… the communication styles popular with young people haven’t been strictly text in many years and the overarching expectation is to be able to start using services in seconds after discovering them with as few clicks and as little research as possible.
Ease of use is also up there. (Compared to IRC)