MAYBE some people may like the sound of the speaker regardless of the graph. MAYBE it does sound good even with a not so perfect graph. MAYBE it's thinking outside the box and creating a speaker that has it's own unique signature.
ThomasAndStereo does NOT post any negative reviews. If it doesn't sound good to him he just sends it back.
This way the company won't get the benefit of a positive review and they also won't get slammed negatively in an open forum that could have serious impact on their business. Could even put them out of business on the opinion of ONE bad review.
"If you don't have anything good to say, don't say anything at all" because YOU might be completely wrong!