I'm stealth because that's what makes me comfortable, and isn't that what we're all aiming to do? Lead a life that we're comfortable with and is true to ourselves? Some people are able to embrace being trans in a way which means that they're comfortable with being open about who they are, and feel that it's part of them and their identity enough to feel the need to share it. Other people have no option to be stealth if they are not consistently read as male/female for whatever reason, and in order for them to be seen as their gender they have to reveal that they're trans. For me, it's a medical condition and thus only medical practitioners, and my partner needs to know.
I don't care either way about what other people do, as long as it suits them and they're respectful for my situation and preferences. I wouldn't particularly like it if there were trans related scars shown on say, BBC news, where loads of cis people will see, because I don't see how that helps our community at all other than making them more recognisable, and it more difficult for me to be stealth once I have top surgery, but that's a separate topic, and something that isn't likely to happen. I don't have a problem with people showing their scars on youtube/blogs for informative purposes, as how else are we supposed to make informed choices about our bodies and surgeons? The vast majority of people will never go searching the internet in a way which would bring them across such information and pictures unless they need to.
In short, you owe no one to be out as trans, and you owe no one to be stealth either.
There are other ways to help the trans community, perhaps just as much as being out, and all without ever leaving your home. As well as on here, I'm part of a couple of secret facebook groups specific to the UK, and through there we've helped numerous people work their way through the NHS and private pathways. It's not easy to do that, especially if your GP isn't the most informed in the world, and I've have been left with no clue how to progress if it wasn't for them, so I want to give that help back. Obviously they have to find the group first, which normally means someone who's already in it has to know them, but I'll leave that down to someone else. I do have a tumblr and youtube channel as well, so there is a small chance of someone finding me, but if they do I'll tackle that when I come to it. I don't tell anyone that I'm on tumblr or youtube in real life, and I don't have enough followers to think that there could be some type of overlap between those who know me IRL or online. If I suddenly got popular perhaps I'd reconsider.