The folks you quoted as being authoritative are simply giving personal opinions, not actual data from published science. No disrespect to either of them, but we are so quick to take as gospel, opinions from personnel with big audio media footprints, as fact or science. Again, no disrespect to either of these two folks as I have benefited from their work product, like so many have.
Think of this. The largest distortion generators in our home theater are the HT room and your loudspeakers by factors of 5x or more. For example, take a top-notch subwoofer outside and measure its distortion levels within decent dB levels (say under 100dB) between 20Hz - 200Hz. SOTA subwoofers will have THD levels under 1% .... outside at a 2 meters distance. Now, take the same subwoofer and place it in the best or optimal location in your room, the same 2m distance and again measure the same distortion at similar dB levels. The in-room distortion will be 5% to 15% (especially at resonance). What changed? The room of course... yet we don't much fret about our distortion-generating rooms. Why?
Similar case with standard loudspeakers. They measure better outside, where reflections don't exist, than they would inside the room, with distortion levels of 10% at higher dB levels...yet we fret much about an audio device having a SINAD of less than -100dB or whatever these non-experts claim is inaudible. A -100dB SINAD signal going through a 5% -10% SINAD (-26dB to -20dB !) speaker/woofer will produce a combined signal with SINAD levels between -26dB to -20 dB!!! No wonder, audio reviewers have always said that the best change you can make to your audio theater is by changing your loudspeakers...assuming getting a new bigger room, hence a bigger house is not an option.
Humans are used to listening to 'distorted sounds' and they sound really good. Go to a top-notch concert hall and listen to your favorite musical piece. At the orchestra level, the distortion is 0%, since that's the reference point. By the time sound reaches your ears, after bouncing off multiple side walls, floors, and ceilings. the distortion levels will be much much higher than at the orchestral level... and yet we listen and enjoy the music without any concern about distortion levels

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Human ears are very tolerant of distortion and are not precision audio test gear like the commonly used AP systems. That's why it's hard to tell the difference between a well-recorded but compressed 320 kbps - 512 kbps audio stream from an uncompressed one...even when using top-notch audio gear. Many 'golden ears' have tried so, with results equal to guessing.
By all means, I'd buy a device with top specs, not because I know it will sound better, but because it was well-engineered and will probably last me a long long while.