Yes, imo measurements are magnitudes more relevant than somebody else's impressions of a component. A shiny face plate says
absolutely nothing about performance. Product specs without any details of the test/measurement conditions are best treated as marketing gibberish. Regarding square wave output of NOS DACs, well, that's why we there are different types of measurements and square waves are certainly not a "standard" measurement for DACs.
Measurements cannot be directly related to our experiences because a) people fail to understand the measurements, b) the experiences are results of bias/placebo (shiny face plates, price tag) etc. In case a) they're still better off comparing components by measurements instead of by random impressions/opinions/"reviews".
Imo that's a prime example of placebo and without the measurements the review would be a big pile of BS. Also see
zanden-5000-review-damages-s-philes-credibility-my-book-1 for some opinions from people who actually (I don't) read (past tense?) stereophile.