But on Facebook, you don't see people getting paid for plagiarism. If you copy and paste somebody else's blog post, I personally believe you should not be rewarded for someone else's work and generate noise that potentially hides those participating in the platform in good faith. If you derive something on top of someone else's work then that is fair use. I'm against blatant copying.

And lastly, you are the master of your own vote, and thus you should be free to do whatever you want with it. Nobody has any obligation to flag plagiarism. When I mentioned that such posts "should" be flagged, perhaps I was a little too strong in my wording. But if you copy and paste, you are stealing intellectual property (although there are problems with copyright laws), and profiting off of somebody else's work while other small authors who puts hours of effort into their work are being buried in the noise seems unfair to me.