I totally agree with that you said, especially since I've seen it happen to multiple authors, but why in this case are the readers harassing the author? Is there a reason?
I'm not completely sure but it may be because the Author called out illegal readers and someone who reads illegally said to them that they should be thankful to illegal readers and saying that how can they have the audacity to say stuff about illegal readers. Which is obviously highly disrespectful and they should be ashamed of themselves for saying that to someone who has worked hard to create a good story.
Apparently there be illegal readers harassing the Author, like we reading for free why go and harass them when they're making you entertainment and we're not even paying for it, obviously most of us would pay if we could but as illegal readers we should have some respect for the authors