I always for for "artistic" over "accurate". But that's not saying that the two are mutually exclusive. They're not. Neither is better, or worse. It just depends on what you're trying to say with your model, what audience you're trying to reach.
Modeling is not a one-dimensional hobby. There are those who build to create bone-stock representations in miniature, and those (like me) who model in order to convey an emotional or evocative message.
I am known for "heavy weathering". I do my models that way because, to me, it shows the rigorous and tough conditions that the vehicles operate in, but more so than that, the role that they play in the balance of the world. It's serious, deadly, impactful in so many ways. In another way, it complements the rough, masculine character of the man who man these machines of destruction.
It has been said on this forum by others that "real machines don't modulate" or something to that effect. However, that's missing the whole point. You're not building a real machine; you're "modeling" a miniature. And light does not act the same on a small model the way it does on a large, real 1:1 object. So you have to learn to reproduce what the human eye "sees" when it perceives a 1:! vehicle. ANd that involves adding shadows, highlights, washes, etc.
Just as you will always have modelers on both sides of the aisle making diametrically-opposite versions of any given model, you will have the same disparity between people in the audience and judges alike. Nobody's "right" of "wrong". There's just your opinion, and it's no more correct or in error than anyone else's.