I think I know of whom you speak. I’m so sorry to hear that some of the wonderful, supportive people in this corner of Medium got conned. I commented twice on all those threads. Luckily for me, my only loss was spending less than an hour total giving support to someone who had alterior motives. They never responded, so I went on to other threads.
What really sucks is this person made it more difficult for those who supported them to trust someone else in need in the future who isn’t out to con them.