No, you just don’t seem to be understanding what I’m saying, or the point of the article linked. The source is the users, of course. What I’m saying is that they didn’t come from twitter. They’ve always been on Steam, just as they’ve always been on twitter or facebook.

And so, it logically follows that if you blame twitter for not dealing with users like that, then you must, by necessity, blame Valve for not dealing with them either.