This is interesting. I'd not heard the counter argument. My thinking is that it does say it's wrong, but it also says lying, infidelity, etc etc, are wrong. And lots of people do these things, but I suppose not openly. The bottom line being you can still welcome and love the sinner, even if you adhere to the bible verses that say the act is a sin. It's not for us to judge, after all. And no one is flawless.
But the idea that the bible doesn't condemn it at all is a new one to me, and an interesting theory. Thank you