I didn't mind Twitter very much, at least in this context, given that nearly everything worth having was either impossible to upload there, or was scraped and slapped on a booru shortly after posting. It's the other two that piss me off, particularly Discord.
And nothing has gotten under my skin quite like looking for something, finding a thread on some forum of somebody asking about it, only to see them accosted and run off by some absolute nigger of a "person" crying about "NOOO YOU CAN'T ARCHIVE PEOPLE'S CREATIONS, ARTISTS SHOULD BE ALLOWED TO NUKE THEIR CONTENT UNOPPOSED!!!
". I hate that shit more than anything else, cause it's the most flagrantly disrespectful thing any creator can do. Sure, you're not under any obligation to maintain free access to your creations indefinitely, that would be ridiculous, but how am I supposed to interpret willfully nuking your creations and keeping them from being reuploaded as anything other than explicit contempt for your audience? Whatever happened to "once it's on the internet, it's there forever"? 