racist, classist, anti-Semitic and fat phobic
Well, that's quite a serious charge sheet.
It really doesn't seem to accord with what I read in the Guardian essay posted above. And I think that's unfair.
From what I can see the worst she has done has been insensitive/rude.
For someone who has spent her working life addressing the issues that maintain the lack of diversity in publishing, actively helping people get into the field, I cannot see how a few insensitive words or phrases add up to a reason to write her off as racist/classist/phobic of bloody anything. I think the opposite. This looks to me like people taking things with the absolute worst possible interpretation and using it to build a case to condemn a writer who has done an awful lot of good and actually spent the best part of her life trying to address racism, classism, etc. for doing so, she's been condemned as having a 'white saviour' complex.
Who would even want to try and get involved in social change, try and make connections or address problems if this is what happens?
I expect one effect this brouhaha is likely to have is to adversely impact programmes set up to try and increase diversity and discourage others from reaching out to work with disparate groups or disadvantaged people.