Anecdotally…. I have a friend who I often share my flowers with who tends to have very Pinterest-y, Instagram-y taste in decor/colors/flowers etc. I was surprised when she was flipping through my dahlia photos, she picked HH Lemon Ice as her favorite of all of them. I love Lemon Ice, but I really wasn’t expecting her to pick a yellow bloom.
I think sometimes yellows can have a tendency to look flat. It’s hard to see the depth of petals due to the brightness of the color and they end up looking like a yellow blob. I think this is why I tend to prefer yellows that have a slight blush or tint of orange or bicolors - the slight change in color helps to define the edges of the form.
But maybe it’s partly that my vision isn’t what it used to be.