Nope. I think the term "straight acting" isn't a helpful one, but I think the fact that more non-stereotypical gays are feeling comfortable enough to come out of the closet and live openly too is a great thing.
I've been told by many people that they never suspected I was gay until I told them, and that I'm the straightest seeming gay guy they've met. I doubt that's true, because I'm probably just the straightest seeming gay guy who has told them. But I've been comfortable with myself for years, and I'm not acting at all, nor do I harbor any self-hatred or oppression. And I'm in a great relationship and open about that too.
Gay people are just as diverse as everyone else, Justice.