Its not that the issue is new. Even 40 years ago you had people who only believed in numbers. What is new now is that there is the internet....so people can let their feelings be known. Some non tweaking believers are on a mission to let everyone know the emperor has no clothes.....trouble is, the emperor likes being naked....ie: most like the results of tweaking. These non tweaking cult members can be relentless....like a mosquito on a summers night.
Most new models from most manufacturers are just mods of previous models.....they find better caps, wire, resistors, power supply regulators, circuits, jacks, bigger cap banks, larger transformers, better fuses, damped chassis, etc. etc. and that is what the new model is.....just a tweaked out older jobbie.
When Bruno created the first N-core amp....the NC400...it measured extremely well. People on DIY audio and other sites started to prostrate in front of Bruno......saying he was the ultimate genius because he made something measure so well......and that it was the "perfect" amplifier. Well, I took this perfect amp and modded it with better output filter caps and it sounded much better......So, was it perfect before I modded it or after?....I say neither. Nothing is perfect. I just made a good amp better. The mod would not change the distortion measurements. Rarely does anyone mod their NC400 so I no longer make money on this mod. Here is a link to people talking about the mod:
https://www.audiocircle.com/index.php?topic=118868.0No matter what these pesky anti modding/tweaking mosquitoes say.....we all benefit from better parts and execution......we get better sound.....but not necessarily better measurements. When we come up with measurements that correlate to what we hear it will be very interesting. So far, we cannot measure anything different in most sonic changes.....but we certainly can hear them. Long live our ears and our belief in our ability to discern better sound!