Agreed. People here sometimes focus too much on "sound quality" while largely ignoring usability. If the UI is poorly designed, no amount of sound quality is worth the frustration of trying to get your player to just do what it's supposed to. And that's largely ignoring the inconvenience of carrying a brick in your pocket (Hifiman HM-801, I'm looking at you).
Well I think usability should be looked at to a certain extent, but I think head-fiers are correct to focus on sound quality first. I mean, we are buying these expensive toys to hear amazing sounds from them, right? Usuabilty is very subjective. For example, many people here complained about the fit of the TF10. They fit me just fine. I had no problem with the IEM, but the sound sig. did not agree with me - making them my least favorite of the top tier IEMs. So sq will always be my main concern.