When engaging in a discussion about racism, sexism, ableism, homophobia, etc. in popular culture (or in life, for that matter), there may be many reasonable points of view.
That said, "You know, no matter what you do, people will object, so don't worry about it and just do what you want," is never, ever a valid response.
(No, I don't have the energy, but you can read about further horrors at SGU
here regarding the disabled thin scientist episode which, apparently, will involve bonus scenes of rape - but don't pay attention to that, that it's rape doesn't seem to concern anyone - and lesbian characters having sex with men, because that's a perennial favorite).