I have never had it explained to me why IRC was better than Discord or whatever. My experience with IRC was "not knowing 90% of what was said in a day because I had to log in and reopen the client every day after most people signed off". And since, at least in my experience with mIRC, you have to be connected to see anything typed in the chat, I found myself out of the loop a lot. Is that what people liked, the transient nature of it?
I get not liking an app constantly pushing new features and popups and VC shit, and I utterly despise discord being used as a wiki or forums or any information storing repository replacement. But I still see it as an IRC upgrade.