The problem comes when a small subset of unhappy users... creates a mountain of bad reviews.
"It never happened to me, or any HP printer I've ever dealt with, but I read online that..."
I'd put a 5 star review on my Samsung Note. Why? Because my phone didn't explode. Hell... my phone has been through the RINGER and it still works. Can I give it a 6 star?
But because of a small SMALL subset of users that have issues with Samsung Phones, all of a sudden there are a thousand 1 star reviews who say "they explode and kill puppies (because that's what the TV/Internet told me)"?
What percentage of iPhones were affected by Bendgate? How many reviews were from Android users who never would have bought an iPhone anyway?
There's a line and, personally, I think that it's crossed when you review something negatively for an issue you've not personally experienced.
Is HP shitty for doing this? Does Samsung need negative press for it? Should Apple have to face their issues? Of course.
But unless YOU PERSONALLY have been affected, you are just part of a mob out on a witch hunt.