There are no rules stating that you must contribute to whatever you copy from the Internet; sometimes the topic suffices; however, in this case, the op is a super lazy poster who did not claim the work as his own, and on that note, I do not believe he deserves to be banned for making silly mistakes. As I previously stated, the forum needs to establish a standard on plagiarism.
He finds some text on Google
and post it here. without any discussion on his part and a possible explanation as to why he quoted it.
This reference is incorrect because it leads nowhere, but the posts are not plagiarized. I believe the forum needs to understand the difference between citation and reference; they are often used interchangeably, but they are not the same thing; in academic publications, both are required, but I do not believe they are required on the forum; if you want to cite a few contents from the internet, you should simply put them in a quote; a link is not required; a reference source is only required when you copy/paste a full article
this is plagiarism for sure, let's look at the wide picture.He finds some text on Google
and post it here. without any discussion on his part and a possible explanation as to why he quoted it. I believe that a member with 1000 good posts and 1 bad post doesn't deserve to be kicked off the forum, and that such a member should be given a chance to correct their mistakes rather than being parmam ban.