it is hard to know what sound is exactly accurate, it is also hard to know who’s rendition of an accurate, ’high fidelity’ sound presentation is most true, even if a number of different designers/firms are trying to achieve that same goal (and not a purposely 'beautified' presentation)
some traits can be quickly called out as unwanted and defining of poor implementation - such as a noticeable grain, or electronic haze, or clearly rolled off or smeared frequencies... but there are various presentations that avoid these pitfalls but still sound rather different
i suppose in the end, which version is most accurate becomes unimportant, what matters is what pleases a particular user in their system, their room
some traits can be quickly called out as unwanted and defining of poor implementation - such as a noticeable grain, or electronic haze, or clearly rolled off or smeared frequencies... but there are various presentations that avoid these pitfalls but still sound rather different
i suppose in the end, which version is most accurate becomes unimportant, what matters is what pleases a particular user in their system, their room