It is a simple and reasonable enough request – please don’t copy and paste content from the site without asking first.  

This is clearly reiterated on every page of the site, and is featured prominently in the pdf that you copied & pasted content from.  It is also not the first time that I’ve asked you not to do it after seeing you have taken content from the site without permission.

The information is already on the site for the benefit of enthusiasts (I’m unconvinced that people can somehow navigate forums but not other websites) but if you wanted to draw attention to the news update on the site, a simple comment with a link would seem more reasonable than copying the content.