Tiffany’s doesn’t try to sell diamonds to a sixteen-year-old girl. Nor are they offended, nor worried, when teens aren’t flocking to their stores. Tiffany’s knows that sixteen-year-old girls most definitely aren’t their market. And I also imagine that, were a sixteen-year-old girl to proclaim that Tiffany’s sucks absolute DONKEY BALLS, they wouldn’t take it to too much heart either. 
That seems obvious on its face, but try telling that to the millennial who has just read a critical review of her work written by a sixty-two-year-old man.
Knowing who will hate your work, turns out, is just as important as knowing who will love it.