I haven't read the offending article. However, could part of the satire been that the writer suggested only straight white women for a show that has multiple ethnicities and sexual orientations?
We've often discussed the question of "color-blind" casting. I happen to believe that it is NOT racist to ensure that minorities play minority characters, while using more open criteria for casting characters that are usually played by white performers. My rationale is that, in a society where racism, sadly, still exists, it is not feasible to abolish race awareness in casting minority roles; that would merely freeze a status quo in which minorities are under-represented.
I am a bit puzzled, however, by the recent brouhaha over Emma Stone's being cast as a character who is part Asian -- if I understand the rationale correctly, the character is frustrated that no one can tell that she is Asian by looking at her. Under those circumstances, casting most Asian actors would not have worked, IMO.
Audrey, the Phantom Phanatic, who nonetheless would rather be Jean Valjean, who knew how to make lemonade out of lemons.