You're certain that Polanski hasn't done anything similar in the years since? I mean, no one over there cares, right, so why would they bother to complain if he did?
I'm pretty sure he's not doing it at 84 years old...
No, it is not. It defines a sexual act, one that Pokanski performed on a 13 year old girl. There's nothing homophobic in this case, unless you're upset that Polanski did it to a girl and not a boy.
Would you prefer I say he buggered her, or that he shoved his dick into her rectum? Sorry, homosexual men apparently don't have a monopoly on the practice. He sodomized her, and that's what I'll say he did.
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Or you could say, "they had consensual anal sex", but that wouldn't express the outrage of your hangups...