lansing, I'll repeat a similar comment I made to someone else before. If you're just here to tear things apart, you're wasting your time.
If you don't find personal use for this, then just let us do our work.
If you have constructive feedback on how to make things better, of can pin-point flaws, then we're all ears. Just try to keep a constructive attitude instead of trying to tear things down.
I posted comparison of mClean vs KNLMeans
here. Sure, most of the image doesn't have much noise but the leather and some of the textures have. It's actually a good test for detail preservation: a mix of no-noise with light-noise.