What's special about IRC is that it's really easy to set up. If all of the social platforms collapsed, you could set up and use IRC with your group of friends until the next social platform blows up and "everyone" moves to it.
If a partial/regional apocalypse happened, you could set up and run IRC.
On the other hand it's a good thing, people can't just join and scroll down 10 years of chat history.
But you'll also be completely unfindable unless your client is online.
I prefer to instead run irssi+otr in a GNU screen session from a random VM/VPS provider. Most others prefer tmux. I'm just stuck in the past I suppose for using GNU screen.
[1a] - https://github.com/convos-chat/convos/
[1b] - https://convos.chat/
[2a] - https://github.com/thelounge
[2b] - Demo: https://demo.thelounge.chat/#/connect
Then there were a few "unofficial" ones that just came in and lurked without telling anyone they were logging everything and publishing it on the internet. A bit of a breach of trust IMO.
Unknown to everyone they're logging content, grabbing URLs and posting it all online.
It's like archive.org logging in to a private forum with an account and scraping the content for public sharing.
I don't like the discord server model, but it allows the platform to prevent spam more easily and to put the responsibility on server owners.
Searching chat history is also a big plus.
IRC sets a high bar for users to choose a client, create an auth account etc. So obviously many of them are power users, and those users are qualitative.
Discord is just much easier for everybody, and it makes money.
I would say this is another indication of how people who grew up with the internet, and who generally base their "community" and "friends" in corporate digital products, are incapable of pushing back on corporate overreach.
Are you finding it difficult as a young professional to buy a house, keep up with subscriptions, save for retirement? Don't worry, you'll be screwed 10x worse by the time your of retirement age.
The "i've got nothing to hide from constant survielance", "just use chrome" crowd is digging their own financial grave.
Think it's bad now, just wait...