Is not having a policy that reduces the risk of interviewers intentionally or subconsciously discriminating against someone who is LGBT exactly the type of thing you would expect from an LGBT-friendly company?

Microsoft itself is very LGBT friendly, but that doesn't mean every employee is. Because of this, HR puts policies into place to try and prevent employees from making employment decisions based on that type of criteria.

Oh I wasn't worried about them being antigay or anything at all, much more so that HR forces them to be that careful and tip-toey about HR practices during recruiting.

edit: to be clear, they were specifically about being LGBT. And I don't necessarily think that sort of PC-ness should be absolutely required, but I'm unhappy to tell you that there are still plenty of discriminatory people out there.

the "certain things" might have had nothing to do with LGBT