(...) OTOH negative tweak bias = ignorance. which is my point. if that subject comes up only someone who has done them in a mature system can defend them. and a big part of tweaking is reaching the point of a stable mature system. in other words, when to do tweaks is a big part of whether they actually do something.
and another word for tweaks is 'system tuning'......or even 'tweak-tuning'. which again requires a stable system. the hifi retail/manufacturing environment is not friendly to it. and it's not sexy to talk about by influencers or dealers as it's hard to sell. they need pretty boxes.
We can always have a different perspective, equally valid IMO, that tweaks are only needed when we are not able to master all the fundamental aspects properly. I do not consider that negative tweak bias = ignorance.
But ignoring the effects of some tweaks is surely ignorance.
The high end is an hobby and we can have very different ways of enjoying it.