Not respecting copyright or reposting and there is no need to make noise here?

Question

Copyright

Walking on Google in search of information I need, I stumble upon a site in which some user cross-posts articles from Habr, while there is no indication of authorship or links to the source, and when viewing a separate article, one gets the impression that he is the author. Actually the question is: is there a copyright infringement in this and does it make sense for the authors of the articles to raise a fuss with the owners of the project?
PS if you need to get acquainted with this - I will post a link, just ask

Answer 1

There are just a million such satellite sites. Seoshniki, their mother.

Answer 2

The topic has already been discussed.
habrahabr.ru/qa/11165/

Answer 3

Just recently I also came across this site. There is an article that was banned here, no comments, no links.
Probably the administration of habr should drop them.