For some reason it didn't allowed me to post there, I have tried. I don't know if you have read my story on Medium, but for example when I tried to talk them about the situation in their Telegram group, they just simply banned me.
I haven't read your article because I don't usually check medium articles by someone.
How it can be that you can't post on their thread if it isn't locked. If the thread isn't lock, everyone is free to post and reply to their ann thread.