Not everybody is trying to attract a wider audience. Some people just want to say what's on their mind without worrying about that stuff. That's one of the beautiful things about personal websites. They're personal.
It's perfectly fine if the style puts you off. You're not wrong for having your own tastes. You're just not the audience for that particular site. Nobody can please everybody.
It's my right to greet guests to my house by singing Don't Stop Believing by Journey flat and terribly off-key. If they complain, I'll tell them it's not that I'm a bad singer, they just aren't my target audience!
This is precisely correct. There's nothing wrong with doing that, and there's nothing wrong with some people deciding they don't want to visit as a result.
It's perfectly fine if the style puts you off. You're not wrong for having your own tastes. You're just not the audience for that particular site. Nobody can please everybody.