I call bull on that.
An owners thread is a valuable resource. When researching something it's always better to get the opinions of actual owners. This is easier done in an owners thread, and people who aren't owners, and are just full of bluff and bluster regarding a product generally stay away from actual owners threads.
A Kaby lake owners thread, for example, is less likely to have some AMD fanboy coming in and stating "it's too expensive, what you need is a FX8350" without anything to back up that claim as to why it's the better choice, other than more cores. Whereas an actual owner might be able to tell you how it has performed against their previous set-up, which may well be what your coming from.
Equally, AMD threads aren't usually full of intel fanboys saying you should just spend the extra £1,000,000 for the latest 8c/16t intel because it's 3 seconds quicker at encoding a 1080p movie.
A general thread asking about these products is more open to opinion from those that don't currently, or have never, owned the product in the first place. And have just formed their opinions based on poor quality reviews and the one reddit thread where the guy used superglue instead of TIM.