Obama's defense of McClurkin's inclusion amounts to this, from an interview with the Advocate:
Part of the reason that we have had a faith outreach in our campaigns is precisely because I don't think the LGBT community or the Democratic Party is served by being hermetically sealed from the faith community and not in dialogue with a substantial portion of the electorate, even though we may disagree with them.
Aside from the adoption of right wing frames, this kind of statement is incredibly insulting to both the LGBT community who are apparently "hermetically sealed from the faith community" and to the "faith community" which is apparently defined as nothing more than a bunch of anti-gay bigots. Not to mention the Democratic Party, which apparently includes no actual religious people.
It's really just insulting to everyone, with a touch of "shut the hell up I know best."