I understand why the hate...
but...
Most of the conclusions of objective reviews are also "below audibility". Heck, objective reviewers are way more likely to say "there is no difference/there is virtually no difference/you can't hear the difference".
If everybody stopped buying because they all know "you can't hear the difference", we won't have $1000 DACs.
But thanks to "audiophiles", the market of $1000 DACs was created. This then allowed Oppo to dump money into the R&D.
Unfortunately, to do well in this $1000 market, what you need to spend is not R&D. It is convincing people why they need to spend $1000. Oppo's method is the objective performance. Which nobody knew or cared.