As one of those that posts a lot of the things you say you turned away from, AND having at least one visible tattoo, I can tell you that it has NEVER ONCE impacted my work or what I do. In fact, I have been recognized as one of the highest and best performing employees on quite a few occasions. Fact is, I love what I do. I work hard, and I play even harder. As it happens, my play time often includes activities that would lead someone such as yourself to completely pass on even an interview. Shameful, at best. Ignorant, at worst. BUT, it certainly is your prerogative. I'll just sit back and laugh at all the potential talent you are passing up on.
To be fair I have seen it work the other way around. I was asked to screen a technical candidate. I found his Facebook page. As wholesome as you might want. But in the technical interview he proved ignorant... I felt sorry for him but he even muffed softballs.
“Taking a chance” on someone is not good management. While it may be contrary to a popular adage, the cover can tell you quite a lot about a book! Without attacking you personally, a wise manager knows that evidence of poor personal decision making in ones private life is the best predictor of a proclivity for workplace screw-ups. If someone’s personal life is a mess and they display poor attitudes such as disregard for authority, complaining, etc. in a public forum, they will most likely make a poor employee despite their inflated modern self image.
So have a good laugh. I'll have one too. But I'll also have a job.
Remember hiring isn’t just going for talent but they have to fit in your team. Some teams can handle people with blue hair, a profane tongue and under-developed modesty. Some can’t. A talented person who will disrupt the team is a bad add. The team has to get along, they don’t have to be best friends, but you can’t have the rest of the team rolling their eyes every time one member walks into the room. And the inverse holds too, I’ve rejected a person for showing up to the interview in a suit and tie, this is Tucson, we aren’t financial or a mortuary, there’s no room on the team for somebody stuffy.
Laugh all you want. You wouldn't get the job anyway as you'd flunk the drug test.