Earlier quoted context omitted.
it feel a bit biased when you say that IRC could have a protocol bump, but you wouldn't make the same modifications to hide pictures in Mattermost. Additionally not being able to share images as a feature? I guess everyone will do the three step upload to imgur first. In my world - if I could get away with less different clients I would. It makes it a nightmare to support.
The protocol itself doesn't bar you from implementing image sharing. Imagine this: You have a bot in your channel that accepts an "upload-image" command followed by a base64-encoded string representing an image (or a series of these commands if line-lenght is limited, I'm not sure about this part of the IRC protocol). The bot checks that the image is actually an image (to avoid weird injection tricks), saves it on th…
And of course it was automated. There are any number of such clients. Slack. Facebook Messenger. WeChat. Viber. Dozens of them. Of course they don't use IRC. But they automate file delivery. And media inlining. And dozens, if not hundreds of other things.
Meanwhile the "nothing stops you from implementing" crowd implements nothing and keeps wondering why basically no one uses these wonderful open protocols.