Ok, I have been looking through some blogs that are in a critical state, and I saw that at least three did the same thing...
Answering hate only/mostly messages
Agreeing with the anons that they aren't worth it
Suddenly deleting their theme completely and only keeping a line or two there
Why do I think it's a hacker?:
Firstly, because unless these unstable bloggers decided to suddenly speak to each other, it's highly improbable they get the same idea to suddenly delete their theme and only keep a line or two there as a suicide note.
Right now, there are three blogs doing the same thing:
Secondly, I have refreshed Anthea's blog more than once, and I have seen three different messages there, do you really think she would change it three times, all of them to announce she was going to kill herself or that she was doing it, if she was actually doing it?
Now, I'm not saying this is actually what's happening, but could it be? Yes, I think so.
Just like everything else done by the hackers, this is causing the fandom to panic again;
Trigger people that visit the blog we asked to send some love
Ignore the messages on the blogs you see with this pattern, unless you know the blogger and have another way to contact them, if so do it as fast as you can to make sure they are alright;
And above all, stay safe!