Still nothing wrong with making our voices heard.
Never said there was.
But if you expect that voice to be taken personally into account every single time, and if you think that's a
good thing:
It's
expensive to pay an artist to work on a book or turn out a cover piece only to have a bunch of whiners get it pulled later. How many times are they gonna wanna do that? Not many. It's financially prohibitive, and the end result: stifles creativity. If you really don't like something, don't buy it. The creators will take a look at what they've done wrong if the sales are poor and try something else.
What a creator/artist makes or outputs is their business. What you choose to spend money on and consume is yours. If everyone starts telling creators what they can and cannot make, they'll start either giving you what they think you won't complain about, then the same people will likely complain they're only getting the same tired crap, that the creator won't take risks, blah blah blah. Or, they won't care anyway.
This is why generally creators/artists/directors don't take massive interest in what their <fans> think. You start doing that and a) you're not a creator anymore, you're pandering; and b) it's a slope.