I don't understand Russian so I can't really determine the accuracy of that post in terms of plagiarism but

    - I marked the text that the moderator claims to be his own
    - I marked quotes
    - Before posting stupid reasoning, please first check the source, by copying and pasting the text that I have highlighted in red.

A post can be constructive and still have references to other sources. If I have some question and someone links me to a blog or just quotes some text from the blog I'd be glad that someone did their research and linked me to correct content.