If beauty existed only in the eye of the beholder, would that make it an unimportant quality? Beauty is subjective, that is, as what the preferences and taste of individuals project onto the world. Took this very fact to be a reason for applauding the human mind on the ground that is praiseworthy and admirable that the human mind should impure beauty into things.
Note a prejudice in the view that what exists independently of thought or emotional response somehow has greater existential importance that what is only or merely in the mind.
If judgments of beauty are in effect projections form subjective states of pleasure and admiration, why should that be less important? The right to say that the human capacity for finding things beautiful does honor humanity.