Thanks for your response, Kaptain Kat. I agree that it's a matter of taste. And just to be clear, I think Hay Day's graphics are gorgeous overall, and I think the artists are amazingly talented.
For what it's worth, I'm not talking about "minimalistic perfect crisp straight lined designs." I sometimes love a rustic look, whether in life or in art, and I think a casual, natural look is perfect for Hay Day. But to my taste, the deliberately flawed look on Hay Day is sometimes overdone and ends up looking exaggerated, like a caricature. For example, the new Valentine's Day bench has some subtle flaws that look natural to me, but I don't think that the big cracks add to the charm. (I'll try to add a photo below.)
But as you said, different opinions make life interesting.
