You keep saying this but, you do understand that most people, when they have a problem with a product, they do not usually run back to the place that sold them the problem. You may not know of the issues... Just like one customers tile guy. He told me in 25 years he had never had a shower fail. I was in one house where he did eight showers 5-6 years ago, all were leaking and had failed. The owners did not call that guy back, they resolved the problem with a different vendor.
Just because you haven't heard, doesn't mean it isn't happening...
Comparing the automotive aftermarket to home remodeling contractors is comparing apples to oranges. I have been doing this for ten years online and I can tell you from first hand experience, when my customers have issues, they contact me the vast majority of the time. Mainly because almost everyone's first thought when having issues with aftermarket products have to do with warranty coverage and because I am their point of contact, they contact me with their concerns. I have been selling the same exact R1Concepts package since 2009 and have sold over 500 R1 packages for Raptor owners since 2012. You can bet that if they weren't all we claim, not only would they not receive the rave reviews they consistently receive from the Raptor community as a whole, the stink from bad reviews or issues, whether here on this forum or elsewhere would serve to ruin their reputation all over the place.