My own guess is they hate when someone links to their own project. Every time I put any link to my projects I get a few downvotes no matter HOW good the rest of the comment is.
My concern is the lack of debate beyond two or three comments. Basically someone says something, another replies, there’s a follow up and then nothing. It’s weird that there’s no discussion, just hit pieces. You see the same thing in the media both in articles/reports as well as callers and comments. We’ve lost the capacity to debate as a society. Or at least we now debate in 123 character tweets or memes.