As a gay man, no it doesn't matter. You can have completely off base opinions no matter who you are. He panders to an audience, and damages the rest of the community in the process.
Calling those articles "exaggerated" is extremely forgiving. The article I quoted uses a combination of outdated pseudo-science and philosophically iffy reasoning behind its pretext. As someone who struggled to come out, I can't tell you how absolutely disheartening and difficult it is to get past your family when they read pieces like that, and clearly don't have the skills necessary to understand why the rationale is bad in the first place. It makes me want to just yank Milo by the neck and show him what irreparable damage he is doing to people (if I could); if he even has the morality to care.
>http://www.breitbart.com/tech/2015/12/08/birth-control-makes.... cites multiple real university studies.
And then you have things like this. Is this supposed to make up for everything else they do? You gave me a list of articles, but these aren't contradictory to their other practices. To my original point: why bother with the source when you can consume that information elsewhere, from a source that is far more likely to be reliable?
To your point about other publications such as the Washington Post being on the other axis of bias, I have trouble understanding how you can simply say they're just on the other side. From everything I've seen from the Washington Post, they're nowhere near as advertently dishonest as Breitbart is, accidentally or otherwise.