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On one hand, the position is clear. On the other hand, I would personally question the objectivity of such an objective assessment from players who don't have at least a minimal musical education. Thirdly, I would say that the quality of performance, originality, and other factors are taken into account in any case, it's just that this isn't always explicitly stated. At the very least, everyone likes that song from Portal, but it's no longer submitted because they know that they'll get low scores for it – so, as you can see, originality is valued, not by half, but by everyone, although obviously to varying degrees.
It's also worth considering that my assessment of originality, as someone who usually listens to music based on the principle of "let's put something from anime or games on in the background," is very different from that of Arcandor, a music enthusiast who has listened to everything on YouTube. For example, if we're talking specifically about this matter.
Although I could surprise Arza, I think, but it would probably be unpleasant...