My take on this is no they don’t. As long as they are truthful they only report on the quality of the product and prevent many people of spending a lot of money from losing it by buying something that doesn’t work.
If your product is shit your company does not deserve to be shielded from the backlash, this is the core of (classic) capitalism after all.
Yes I tend to like this but I wasn’t able to put it into words as well as you weee - someone who doesn’t just spout off their experience as if it’s the only one, but takes the time to understand if this is something that is only affecting them or if it’s the specific unit they have, etc.
Techmoan is the same way when he reviews a product and I’ve always respected his reviews a lot more because of it.