delericho
Legend
I agree with your first paragraph, but disagree with the conclusion you come to in the second. The contextualization/interpretation of art is always going to be subjective to the viewer - all of the presumptions about what's being shown happen in the mind of the people viewing it. While it's certainly simplest to read absolutely nothing into a given picture, but I wouldn't call that "best."
It's about expectations, suspension of disbelief, or similar - you the audience is presented with an image of a knight in full plate armour wandering around in the desert under the baking heat, that's going to raise a lot of eyebrows. Yes, it can be rationalised away as "he's wearing a ring of endure elements", but because that's not something that's clear from the picture, it's probably not the first assumption people will make. And so the artwork becomes a distraction from the rest of the game, which isn't the desired effect.
(Similarly the female barbarian in the chainmail bikini - yes, it could just be glamoured armour, but we know it would cause needless debate, again distracting from the game it's supposed to be supporting.)
It's less that I'm suggesting the viewer read nothing into a given image; more that the arist should write nothing into it (or at least nothing* SoD-breaking that can't be directly depicted into the picture).
* And even the 'nothing' here admits to exceptions - I'm not advocating an absolute ban here, necessarily, more a general approach.