It's not a safe place for your mind being on though. At the time being, it is an usual, textbook aib content without images. If you look for places that could reduce your depression or fear of being stalked, do not consider anonymous boards. You'll get a huge loads of depression, products of mental illness, twisted worldviews, thinking errors and outright engineered posts than will put your own mental health in danger if consumed regularly. It's no safe place, because once you're hooked in, you're exposed to everything there and you cannot control that. It's tempting to separate "you" and your identity and integrity by hiding your name or username, but it's you who is there, not your username. It is like saying "okay, the world is scary and I will live in a simulation game where nobody knows who I am". The problem with that thinking is that now you live there and all your issues are still with you.

Also, as others pointed out itt, the problem with anonymity and deanonymisation is not in ip addresses or similar technical trails. To be anonymous, you have to check what you speak of on anonymous board and irl constantly, and which information you disclose, either consciously or in small details. Many slow aib users can recognize each other just by a little amount of text. You can also never know whether your readers could do A+B+C of your story or a comment and recognize you or someone from your environment irl. Your life is unique enough to do that, even if all you do is sitting before the screen all the time. I'd suggest to lurk for few years before getting out of readonly to evaluate your ability to stay anonymous, but only if there was something to do there in the first place.

It is also funny that it is called safe, when all you need to detect who said what at the legal level is your isp's metadata.