I'm sorry but this idea that there's mysterious knowledge of hardship which white, male members of the middle class automatically don't possess is garbage and is exactly the sort of thing I was hinting at in the last sentence of my comment. You can be as polite about it as you want but it immediately shuts down dialogue and informs the original speaker that he is the replier's intellectual inferior and his opinion isn't valued. In short it's a form of ad hominem. No matter how well-meaning it distracts from the discussion of the actual issue and drags us into identity politics.
In this specific case I think it also demeans publishers who are not white and male. Plenty of non-white, non-male people have been publishing controversial material since long before Twitter existed. Just like the white and male ones, they learned to take the heat or get out of the kitchen. Things like the civil rights movement were accomplished within this context. The issue at hand is not a race or gender issue. All races and genders are being attacked on Twitter. The issue is that some Twitter users don't realize how hot the kitchen can get before they walk into it.