9 times out of 10, I can find a channel for exactly what I want to talk about and instantly get several people (usually experts) into a discussion (from health to software, informal chatting to gaming). Every other communication platform I've tried (besides email) seems shockingly barren in comparison, from XMPP to discord to slack.
If anything, the universe where IRC is the only chat app that has proliferated is the one we are in right now.
Sometimes, you just have to find the right channel (which may be on another network!). For example, my go-to channel for systems programming help happens to be a channel registered for a browser game. IRC lets you find that single person on earth who can unblock you the most effectively, whereas most other platforms will represent the "average person".
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