It doesn't matter who the author is or where the text was copied from? Is your head all right? 
It matters only if steklomoy is the original author. If you can prove that with timestamps etc - that's great. So far all evidence shows otherwise.
This is not a court of law. No one is going to prison. User was shown to have copied text from somewhere else and passed it as their own => ban. It's been that way for years here and you're not the first one attempting to bend the rules. That's not a winning strategy. You should focus on whether steklomoy's positive contributions to the forum are sufficient for him to get leniency in this case, instead of continuing to argue that copypasta is ok. It's not.
Well, I repeat again, for the imbecile. The rules of the Russian section prohibit exactly plagiarism, and not copying news headlines. Therefore, I do not need to prove anything, since the text under discussion is not plagiarism in the literal sense of the word, like the appropriation of other people's ideas, because the text does not contain any thoughts and ideas, but is news, and everyone can check its reliability through a search engine.