New covenant, yadda yadda. Homosexuality isn't necessarily in good shape from nixing the Leviticus et al stuff, since there's crap in the NT, too, but it's arguably better. Iirc it's a common interpretation but not necessarily the most theologically sound, though I can't quite recall why at the moment.
That said, hating other humans has pretty much always been explicitly contrary to the word of the new testament. Forget where but there's scripture quoted more than once in the thread. Lotta' folks can't really wrap their head around loving even the sinner, heh.
And sure, telg, you have to follow some of the rules but there's only two or three big ones and pretty much all of the minutia is of questionable relevance to 'em. Tends to be how folks not terribly interested in the shitty parts of the text rolls with things. One of the more fun interpretations I've seen occasionally is that much/most of the stuff in the texts themselves is a test. Stuff that's contrary or interferes with the big message (which basically boils down to love god, love your fellow man, treat both well) littered throughout and there to more or less see how well the people claiming to be faithful are actually paying attention. So hate gays, test to see if the message love got through. Stone XYZ, treat well. OT God, hell, maybe even that's a test to see whether you love god and its message enough to reject a presentation that's obviously against its loving nature. So on, so forth. Fun stuff. Heretical revisionist bullshit, more than anything, but the best kind of heretical revisionist bullshit, that's fun and seems to tend to produce some pretty decent folks.