So all white men hold the same opinion? Or is there a finite number of opinions capable of being held by white men, and all of them are represented adequately in print?
It's not weird. If we were deciding between green shoes or pink shoes and all we heard were opinions from people who own green shoes, it would be weird. Does that mean all green shoed people think the same? No. But clearly we'd like to hear from everyone to make an informed decision.
Your analogy is a bit flawed as the color of my shoes is something I can chose and change at any point in time.
If I was born with green feet and you were born with pink ones, perhaps my opinions should hold the same weight as the guy born with pink feet. Just because you were born with pink feet doesn't make you any more or less special than me.
Weird statement, either way.