Also, the list of banned practices is something a newbie to indie publishing might do, but those of us trying to make it in as an indie author understand that the marketplace has moved on from those kind of deceptive practices. Those types of marketing strategies (and that's what they are-sleazy marketing strategies) simply don't work. The moment Amazon figures out you're doing anything like sockpuppetry or paid reviews--and they aren't stupid. They pick this stuff up pretty fast nowadays-- there goes your KDP account i.e. your book is pulled and so is your account. You might never again publish from your home I.P. address. That's a pretty stupid risk to take, and I don't know of any recently successful fantasy authors (past three years) who took that route. It's simply not a viable strategy nowadays.
The point you make about evidence is very good though. I'd applaud this site if for each entry proof would be presented. That would allow the reader to determine whether or not the proof is actually compelling. Now it just feels like bad-mouthing, which I agree with @ExTended is slander pure and simple.