0. Irc doesn’t require a phone number or email address in order to go there and talk. It’s up to the channel owners whether unregistered users can join a channel. it’s also possible for channel ops to waive registration requirements.
To avoid spam-bots/trolls on discord, I do like that things must have an unique ID.
1. Irc lets you choose or create whatever client you want. Discord and others force you to use Their proprietary Spyware client Which collects and monetizes your data as a business model.
You can use Discord client or whatever Webbrowser is installed on your system = a more easy way to getting started you can not have with whatever your device is.
2. Irc gives the people who use it more control and can have a chance of a good user interface if you choose/create a good client. Discord has a horrible user interface and doesn’t resize very well. It was impossible to ignore people in discord last time I checked. It informs you everytime they talk.
Since I never had that issue (i can very easy mute persons or whole "channels")
3. Irc uses low bandwidth and has no voice chat photos and other nonsense. Discord uses a lot of computer resources and I’ve had it max our my cpu before.
Bandwidth depend on how many servers you joined and if you let them auto-update or like i, servers do nothing until i tell.
Max CPU?? I assume you was using some alpha kind of client.
4. Discord saves offline chats irc requires you to always be online or use a bouncer or other resources that record things you missed including channel logs.
I don’t see the point of never missing chatter in a chat channel it’s exhausting to try to catch up. it’s better to use forums for asynchronous communication they are much better organized.
Discord helps me to save energy, I do not need 24/7 to have something running to really get "all" messages and what I read or skip depend on me.
Last time I checked IRC/bouncers, it told me something like "you need to be registered for at least XX month...."
5. Irc doesn’t have voice chat and people can’t show you photos you don’t want to see in the channel everything is done by links to share things like photos or text instead of cluttering channel with them.
(De)-Activate image support is done by one easy setting, what I try to say is, when you hate multimedia and want to save bandwidth, just turn it off
The possibility to quick share some image/video or going into a voice chat I do never want to miss again.
Why I use Discord and not IRC? Watch above image and you understand. Feel free to attach a screenshot of IRC to have something we can compare.
Anyway, this should not be a discussion about what is better or worse, both have their right in existence.