I’ve watched a few of Danny’s videos on fixing speakers.
First, the genesis of these videos is that people who own the speakers send them into Danny to see if there is something he can do to make them sound better. Danny isn’t sua sponte attacking any speaker manufacturer. So we start with the baseline that the owner of the speaker isn’t satisfied with something about the speaker.
Second, Danny does measurements and is looking for various things to improve the speaker such as quality of parts, speaker resonance, time and phase. I believe he only takes one speaker, does the measurements and then the upgrades. I presume (or guess) that he only does videos if the owner of the speaker is okay with the video and is satisfied with the upgrade.
Third, as to measurement vs listening, I’m okay with having different viewpoints as long as the methodology is sound. I don’t know enough to critique ASR’s methods or just listening methods. There are way too many variables in just listening to the speaker to say anything definitive. Even a blind test isn’t going to tell you a lot because everyone’s listening space is different. Personally, I’m more interested in the general qualities and specs of the speaker which has been pretty solid in my deciding on speakers since I don’t live anywhere where I can hear them prior to purchase. Those kinds of reviews, for the most part, have been pretty solid in helping me make decisions.