This I get. One of the hardest mental blocks that I had to get around was thinking that it would be deeply embarrassing and triggering if I talked about my decisions and experiences. That I would be "found out" and "be exposed as a fraud".
It is quite the opposite. Talking about your experiences is extremely liberating. You can be who you are, you don't have to make anything up to fill in the gaps, and it is just in general much easier than worrying about conforming to some expectation. AND you will be much more interesting, because you have lessons to pass on that somebody else may find valuable and apply to their own lives.
Don't you think you should probably stop your activism? It isn't good for you and you're in no position to advocate for anyone.
I would caution you not to. What goes on the internet stays there forever. Google will fight your right to be forgotten. Real names are a great way to attract batty twitter haters who want to ruin your life due to some perceived slight from reading your stories. You can easily go from pity story of the day to "ZOMG I hope you never get a job and die in the streets" in just a few words on this board. Be wary.