It looks like a little of an article (what I see by google translate). It's generally done by some newbies or some users who want to promote their blog here in this forum. Just add a title and post the link to the article (Though it's not a good way). But they put the reference there. You did a mistake by not putting a reference link there.
Let's see what actually the rule saying.
...
33. This includes both copying parts or the entirety of other users' posts or threads and copying content from external sources (e.g. other websites) and passing it as your own.
In fact, in the rules of the Russian-language section, this article looks much more prosaic:
33. Зaнимaтьcя плaгиaтoм зaпpeщeнo.
Which in translation means - plagiarism is prohibited.
Plagiarism, in my understanding, has exactly the same meaning as in Russian dictionaries and Wikipedia. That is exactly what I wrote about above.
copy/pasted
Not all copy-paste is plagiarized. I never tire of repeating that plagiarism is the theft of ideas or thoughts, and not sharing messages to the public.
