Mr.Badguy
Super lefty
No, it's not discriminatory if indeed it's a tenet of ones faith. It's simply their faith. It does not harm anyone. I'd agree that they should be required to post a notice, but the idea that someone should be forced to act against their religious conscience is anathema to their 1st amendment right.
The tenet of their faith regarding homosexuals is that they should be put to death. If you're already not doing that as a Christian, you're already not following the book. Nowhere in the bible does it state to not provide services to homosexuals.